Bug 1508992 - Enable ESLint for dom/plugins/test/mochitest (Manual changes). r=Standard8,qdot

Differential Revision: https://phabricator.services.mozilla.com/D20094

--HG--
extra : moz-landing-system : lando

.eslintignore

@@ -189,7 +189,6 @@ dom/network/**
 dom/payments/**
 dom/performance/**
 dom/permission/**
-dom/plugins/test/mochitest/**
 dom/plugins/test/unit/**
 dom/promise/**
 dom/push/**

dom/plugins/test/mochitest/browser_bug1196539.js

@@ -20,7 +20,6 @@ add_task(async function() {
 
   setTestPluginEnabledState(Ci.nsIPluginTag.STATE_ENABLED, "Test Plug-in");
 
-  let testTab = gBrowser.selectedTab;
   let pluginTab = await BrowserTestUtils.openNewForegroundTab(gBrowser, gTestRoot + "plugin_test.html");
   let homeTab = await BrowserTestUtils.openNewForegroundTab(gBrowser, "about:home");
 

dom/plugins/test/mochitest/browser_pluginscroll.js

@@ -1,5 +1,7 @@
 var gTestRoot = getRootDirectory(gTestPath).replace("chrome://mochitests/content/", "http://127.0.0.1:8888/");
 
+const {Preferences} = ChromeUtils.import("resource://gre/modules/Preferences.jsm");
+
 /**
  * tests for plugin windows and scroll
  */
@@ -56,7 +58,6 @@ add_task(async function() {
 
   setTestPluginEnabledState(Ci.nsIPluginTag.STATE_ENABLED, "Test Plug-in");
 
-  let testTab = gBrowser.selectedTab;
   let pluginTab = await BrowserTestUtils.openNewForegroundTab(gBrowser, gTestRoot + "plugin_test.html");
 
   result = await ContentTask.spawn(pluginTab.linkedBrowser, null, async function() {
@@ -121,7 +122,6 @@ add_task(async function() {
 
   setTestPluginEnabledState(Ci.nsIPluginTag.STATE_ENABLED, "Test Plug-in");
 
-  let testTab = gBrowser.selectedTab;
   let pluginTab = await BrowserTestUtils.openNewForegroundTab(gBrowser, gTestRoot + "plugin_subframe_test.html");
 
   result = await ContentTask.spawn(pluginTab.linkedBrowser, null, async function() {
@@ -183,7 +183,6 @@ add_task(async function() {
 
   setTestPluginEnabledState(Ci.nsIPluginTag.STATE_ENABLED, "Test Plug-in");
 
-  let testTab = gBrowser.selectedTab;
   let pluginTab = await BrowserTestUtils.openNewForegroundTab(gBrowser, gTestRoot + "plugin_test.html");
 
   result = await ContentTask.spawn(pluginTab.linkedBrowser, null, async function() {
@@ -248,7 +247,6 @@ add_task(async function() {
 
   setTestPluginEnabledState(Ci.nsIPluginTag.STATE_ENABLED, "Test Plug-in");
 
-  let testTab = gBrowser.selectedTab;
   let pluginTab = await BrowserTestUtils.openNewForegroundTab(gBrowser, gTestRoot + "plugin_subframe_test.html");
 
   result = await ContentTask.spawn(pluginTab.linkedBrowser, null, async function() {

dom/plugins/test/mochitest/dialog_watcher.js

@@ -1,3 +1,5 @@
+/* eslint-env mozilla/chrome-worker */
+
 const EVENT_OBJECT_SHOW = 0x8002;
 const EVENT_OBJECT_HIDE = 0x8003;
 const WINEVENT_OUTOFCONTEXT = 0;
@@ -7,6 +9,7 @@ const INFINITE = 0xFFFFFFFF;
 const WAIT_OBJECT_0 = 0;
 const WAIT_TIMEOUT = 258;
 const PM_NOREMOVE = 0;
+var user32;
 
 function DialogWatcher(titleText, onDialogStart, onDialogEnd) {
   this.titleText = titleText;
@@ -116,6 +119,7 @@ DialogWatcher.prototype.getWindowText = function(hwnd) {
   if (this.getWindowTextW(hwnd, buffer, buffer.length)) {
     return buffer.readString();
   }
+  return undefined;
 };
 
 DialogWatcher.prototype.processWindowEvents = function(timeout) {
@@ -147,7 +151,7 @@ DialogWatcher.prototype.processWindowEvents = function(timeout) {
                                   0, callback, 0, 0,
                                   WINEVENT_OUTOFCONTEXT | WINEVENT_SKIPOWNPROCESS);
   if (!hook) {
-    return;
+    return null;
   }
   // Check if the window is already showing
   var hwnd = this.findWindow(null, this.titleText);

dom/plugins/test/mochitest/file_bug1245545.js

@@ -1,3 +1,4 @@
+/* eslint-env mozilla/frame-script */
 /* Any copyright is dedicated to the Public Domain.
    http://creativecommons.org/publicdomain/zero/1.0/ */
 
@@ -17,5 +18,5 @@ function getTestPlugin(pluginName) {
 
 addMessageListener("check-plugin-unload", function(message) {
   var tag = getTestPlugin();
-  var results = sendAsyncMessage("check-plugin-unload", tag.loaded);
+  sendAsyncMessage("check-plugin-unload", tag.loaded);
 });

dom/plugins/test/mochitest/file_bug863792.html

@@ -21,7 +21,6 @@ document.body.appendChild(i);
 i.addEventListener("load", function loaded() {
   var id = i.contentDocument;
   var e = id.createElement("embed");
-  var callbackrun = false;
   e.width = 200;
   e.height = 200;
   e.type = "application/x-test";
@@ -33,7 +32,6 @@ i.addEventListener("load", function loaded() {
     ob.removeChild(i);
     id.body.clientTop;
     id.body.removeChild(e);
-    callbackrun = true;
   });
   id.body.appendChild(e);
   e.clientTop;

dom/plugins/test/mochitest/hang_test.js

@@ -1,5 +1,6 @@
 
 const {parseKeyValuePairsFromFile} = ChromeUtils.import("resource://gre/modules/KeyValueParser.jsm");
+var { Services } = ChromeUtils.import("resource://gre/modules/Services.jsm");
 
 var success = false;
 var observerFired = false;
@@ -19,9 +20,7 @@ var testObserver = {
     isnot(pluginId, "", "got a non-empty plugin crash id");
 
     // check plugin dump and extra files
-    let directoryService =
-      Cc["@mozilla.org/file/directory_service;1"].getService(Ci.nsIProperties);
-    let profD = directoryService.get("ProfD", Ci.nsIFile);
+    let profD = Services.dirsvc.get("ProfD", Ci.nsIFile);
     profD.append("minidumps");
     let pluginDumpFile = profD.clone();
     pluginDumpFile.append(pluginId + ".dmp");
@@ -82,9 +81,7 @@ function onPluginCrashed(aEvent) {
   ok("submittedCrashReport" in aEvent, "submittedCrashReport is a property of event");
   is(typeof aEvent.submittedCrashReport, "boolean", "submittedCrashReport is correct type");
 
-  var os = Cc["@mozilla.org/observer-service;1"].
-           getService(Ci.nsIObserverService);
-  os.removeObserver(testObserver, "plugin-crashed");
+  Services.obs.removeObserver(testObserver, "plugin-crashed");
 
   SimpleTest.finish();
 }

dom/plugins/test/mochitest/hangui_iface.js

@@ -1,10 +1,14 @@
+/* eslint-env mozilla/chrome-worker */
+
 var user32;
 var sendMessage;
 var getDlgItem;
 var messageBox;
 var watcher;
 
+/* import-globals-from hangui_common.js */
 importScripts("hangui_common.js");
+/* import-globals-from dialog_watcher.js */
 importScripts("dialog_watcher.js");
 
 function initCTypes() {

dom/plugins/test/mochitest/test_bug1028200-1.html

@@ -32,6 +32,7 @@
         this.document.mozCancelFullScreen();
         return fullScreenChange;
       }
+      return Promise.resolve();
     });
 
     /**

dom/plugins/test/mochitest/test_bug1028200-2.html

@@ -32,6 +32,7 @@
         this.document.mozCancelFullScreen();
         return fullScreenChange;
       }
+      return Promise.resolve();
     });
 
     /**

dom/plugins/test/mochitest/test_bug1028200-3.html

@@ -32,6 +32,7 @@
         this.document.mozCancelFullScreen();
         return fullScreenChange;
       }
+      return Promise.resolve();
     });
 
     /**

dom/plugins/test/mochitest/test_bug1028200-4.html

@@ -32,6 +32,7 @@
         this.document.mozCancelFullScreen();
         return fullScreenChange;
       }
+      return Promise.resolve();
     });
 
     /**

dom/plugins/test/mochitest/test_bug1028200-5.html

@@ -32,6 +32,7 @@
         this.document.mozCancelFullScreen();
         return fullScreenChange;
       }
+      return Promise.resolve();
     });
 
     /**

dom/plugins/test/mochitest/test_bug1028200-6.html

@@ -32,6 +32,7 @@
         this.document.mozCancelFullScreen();
         return fullScreenChange;
       }
+      return Promise.resolve();
     });
 
     /**

dom/plugins/test/mochitest/test_bug1028200-7.html

@@ -32,6 +32,7 @@
         this.document.mozCancelFullScreen();
         return fullScreenChange;
       }
+      return Promise.resolve();
     });
 
     /**

dom/plugins/test/mochitest/test_bug1245545.html

@@ -40,7 +40,7 @@
            ok(true, "Test plugin unloaded in chrome process");
            SimpleTest.finish();
          } else {
-           var results = script.sendAsyncMessage("check-plugin-unload");
+           script.sendAsyncMessage("check-plugin-unload");
          }
        }
        testContentUnload();

dom/plugins/test/mochitest/test_bug1307694.html

@@ -24,9 +24,9 @@
    }
 
    function runTests() {
-     p = document.getElementById("plugin1");
+     var p = document.getElementById("plugin1");
      ok(p.setColor != undefined, "Static plugin parameter (salign/scale) ordering were correct");
-     p2 = document.getElementById("plugin2");
+     var p2 = document.getElementById("plugin2");
      ok(p2.setColor != undefined, "Dynamic plugin parameter (salign/scale) ordering were correct");
      SimpleTest.finish();
    }

dom/plugins/test/mochitest/test_bug539565-1.html

@@ -22,12 +22,13 @@ function runTests() {
       waitedForPaint++;
       moveBy = -moveBy;
       $("abs").style.left = ($("abs").offsetLeft + moveBy) + "px";
-      var x = document.documentElement.offsetHeight;
+      document.documentElement.offsetHeight;
       var pc = testplugin.getPaintCount ? testplugin.getPaintCount() : -2;
       if (waitedForPaint == 20 || (pc != testplugin.last_paint_count && pc >= 0)) {
         setTimeout(func, 0);
-      } else
+      } else {
         setTimeout(waitForPaintCountIncrement, 50);
+      }
     }
     waitForPaintCountIncrement();
   }

dom/plugins/test/mochitest/test_bug539565-2.html

@@ -22,12 +22,13 @@ function runTests() {
       waitedForPaint++;
       moveBy = -moveBy;
       $("abs").style.left = ($("abs").offsetLeft + moveBy) + "px";
-      var x = document.documentElement.offsetHeight;
+      document.documentElement.offsetHeight;
       var pc = testplugin.getPaintCount ? testplugin.getPaintCount() : -2;
       if (waitedForPaint == 20 || (pc != testplugin.last_paint_count && pc >= 0)) {
         setTimeout(func, 0);
-      } else
+      } else {
         setTimeout(waitForPaintCountIncrement, 50);
+      }
     }
     waitForPaintCountIncrement();
   }
@@ -76,7 +77,7 @@ function runTests() {
     var container = $("container");
     container.style.MozTransformOrigin = "0px 0px";
     container.style.MozTransform = "scale(0.5)";
-    var x = document.documentElement.offsetHeight;
+    document.documentElement.offsetHeight;
     click(60, 52, function() { verify("4", 240, 208, test5); });
   }
   function test5() { // fullZoom=2 + scale(2)
@@ -84,7 +85,7 @@ function runTests() {
     var container = $("container");
     container.style.MozTransformOrigin = "0px 0px";
     container.style.MozTransform = "scale(2)";
-    var x = document.documentElement.offsetHeight;
+    document.documentElement.offsetHeight;
     click(108, 112, function() { verify("5", 108, 112, endTest); });
   }
 

dom/plugins/test/mochitest/test_bug751809.html

@@ -47,6 +47,7 @@
     // Triggering a paint and waiting for it to be flushed makes sure
     // that both plugin and platform see the plugin element as visible.
     // See bug 805330 for details.
+    /* global waitForAllPaintsFlushed */
     plugin.setColor("FF000088");
     waitForAllPaintsFlushed(afterPaintsFlushed);
   }

dom/plugins/test/mochitest/test_bug777098.html

@@ -27,6 +27,7 @@ function go() {
 
   // Force a re-instantiate by re-setting dummy uri,
   // making val a wrapper for a dead plugin
+  // eslint-disable-next-line no-self-assign
   plugin.data = plugin.data;
 
   // The correct behavior is an exception, if plugin.checkObjectValue succeeds

dom/plugins/test/mochitest/test_bug784131.html

@@ -58,10 +58,10 @@
     nested_parent.style.display = "inherit";
 
     // Ensure plugins are spawned
-    var body_obj = getObjectValue(body_embed);
-    var nested_obj = getObjectValue(nested_embed);
-    isnot(body_obj, null, "body plugin spawned");
-    isnot(nested_obj, null, "nested plugin spawned");
+    var body_objs = getObjectValue(body_embed);
+    var nested_objs = getObjectValue(nested_embed);
+    isnot(body_objs, null, "body plugin spawned");
+    isnot(nested_objs, null, "nested plugin spawned");
 
     // Take away frames again, flush layout, restore frames
     body_embed.style.display = "none";
@@ -75,8 +75,8 @@
 
     // Spin event loop, ensure plugin remains running
     SimpleTest.executeSoon(function() {
-      ok(body_embed.checkObjectValue(body_obj), "body plugin still running");
-      ok(nested_embed.checkObjectValue(nested_obj), "nested plugin still running");
+      ok(body_embed.checkObjectValue(body_objs), "body plugin still running");
+      ok(nested_embed.checkObjectValue(nested_objs), "nested plugin still running");
       SimpleTest.finish();
     });
   });

dom/plugins/test/mochitest/test_bug967694.html

@@ -52,7 +52,7 @@ ok(thrown, "Function call should have thrown");
 ok(!spPlugin.hasRunningPlugin, "Plugin should not have spawned");
 
 // Try property access from content
-var hi = plugin._testShouldntExistContent;
+hi = plugin._testShouldntExistContent;
 ok(spPlugin.hasRunningPlugin, "Should've caused plugin to spawn");
 
 // Property set

dom/plugins/test/mochitest/test_clear_site_data.html

@@ -76,28 +76,28 @@
       ok(stored(["foo.com", "bar.com", "baz.com", "qux.com", "quz.com"]),
          "Data stored for sites");
 
-      pluginHost.clearSiteData(pluginTag, null, FLAG_CLEAR_CACHE, 4, {callback() { test2(); }});
+      pluginHost.clearSiteData(this.pluginTag, null, FLAG_CLEAR_CACHE, 4, {callback() { test2(); }});
     }
     function test2() {
       ok(stored(["foo.com", "bar.com", "baz.com", "qux.com", "quz.com"]),
          "Data stored for sites");
 
       // Clear cache data 5 seconds or older.
-      pluginHost.clearSiteData(pluginTag, null, FLAG_CLEAR_CACHE, 5, {callback() { test3(); }});
+      pluginHost.clearSiteData(this.pluginTag, null, FLAG_CLEAR_CACHE, 5, {callback() { test3(); }});
     }
     function test3() {
       ok(stored(["foo.com", "bar.com", "baz.com", "quz.com"]),
          "Data stored for sites");
       ok(!stored(["qux.com"]), "Data cleared for qux.com");
       // Clear cache data for foo.com, but leave non-cache data.
-      pluginHost.clearSiteData(pluginTag, "foo.com", FLAG_CLEAR_CACHE, 20, {callback() { test4(); }});
+      pluginHost.clearSiteData(this.pluginTag, "foo.com", FLAG_CLEAR_CACHE, 20, {callback() { test4(); }});
     }
     function test4() {
       ok(stored(["foo.com", "bar.com", "baz.com", "quz.com"]),
          "Data stored for sites");
 
       // Clear all data 7 seconds or older.
-      pluginHost.clearSiteData(pluginTag, null, FLAG_CLEAR_ALL, 7, {callback() { test5(); }});
+      pluginHost.clearSiteData(this.pluginTag, null, FLAG_CLEAR_ALL, 7, {callback() { test5(); }});
     }
     function test5() {
       ok(stored(["bar.com", "baz.com", "quz.com"]), "Data stored for sites");
@@ -105,58 +105,58 @@
       ok(!stored(["qux.com"]), "Data cleared for qux.com");
 
       // Clear all cache data.
-      pluginHost.clearSiteData(pluginTag, null, FLAG_CLEAR_CACHE, 20, {callback() { test6(); }});
+      pluginHost.clearSiteData(this.pluginTag, null, FLAG_CLEAR_CACHE, 20, {callback() { test6(); }});
     }
     function test6() {
       ok(stored(["bar.com", "baz.com"]), "Data stored for sites");
       ok(!stored(["quz.com"]), "Data cleared for quz.com");
 
       // Clear all data for bar.com.
-      pluginHost.clearSiteData(pluginTag, "bar.com", FLAG_CLEAR_ALL, 20, {callback(rv) { test7(rv); }});
+      pluginHost.clearSiteData(this.pluginTag, "bar.com", FLAG_CLEAR_ALL, 20, {callback(rv) { test7(rv); }});
     }
-    function test7(rv) {
+    function test7() {
       ok(stored(["baz.com"]), "Data stored for baz.com");
       ok(!stored(["bar.com"]), "Data cleared for bar.com");
 
       // Disable clearing by age.
       p.setSitesWithDataCapabilities(false);
 
-      pluginHost.clearSiteData(pluginTag, null, FLAG_CLEAR_ALL, 20, {callback(rv) {
+      pluginHost.clearSiteData(this.pluginTag, null, FLAG_CLEAR_ALL, 20, {callback(rv) {
     is(rv, Cr.NS_ERROR_PLUGIN_TIME_RANGE_NOT_SUPPORTED);
     test8(rv);
   }});
     }
-    function test8(rv) {
-      pluginHost.clearSiteData(pluginTag, null, FLAG_CLEAR_CACHE, 20, {callback(rv) {
+    function test8() {
+      pluginHost.clearSiteData(this.pluginTag, null, FLAG_CLEAR_CACHE, 20, {callback(rv) {
     is(rv, Cr.NS_ERROR_PLUGIN_TIME_RANGE_NOT_SUPPORTED);
     test9(rv);
   }});
     }
-    function test9(rv) {
-      pluginHost.clearSiteData(pluginTag, "baz.com", FLAG_CLEAR_ALL, 20, {callback(rv) {
+    function test9() {
+      pluginHost.clearSiteData(this.pluginTag, "baz.com", FLAG_CLEAR_ALL, 20, {callback(rv) {
     is(rv, Cr.NS_ERROR_PLUGIN_TIME_RANGE_NOT_SUPPORTED);
     test10(rv);
   }});
     }
-    function test10(rv) {
-      pluginHost.clearSiteData(pluginTag, "baz.com", FLAG_CLEAR_CACHE, 20, {callback(rv) {
+    function test10() {
+      pluginHost.clearSiteData(this.pluginTag, "baz.com", FLAG_CLEAR_CACHE, 20, {callback(rv) {
     is(rv, Cr.NS_ERROR_PLUGIN_TIME_RANGE_NOT_SUPPORTED);
       test11();
       }});
     }
     function test11() {
       // Clear cache for baz.com and globally for all ages.
-      pluginHost.clearSiteData(pluginTag, "baz.com", FLAG_CLEAR_CACHE, -1, {callback(rv) { test12(); }});
+      pluginHost.clearSiteData(this.pluginTag, "baz.com", FLAG_CLEAR_CACHE, -1, {callback(rv) { test12(); }});
     }
     function test12() {
-      pluginHost.clearSiteData(pluginTag, null, FLAG_CLEAR_CACHE, -1, {callback(rv) { test13(); }});
+      pluginHost.clearSiteData(this.pluginTag, null, FLAG_CLEAR_CACHE, -1, {callback(rv) { test13(); }});
     }
     function test13() {
       // Check that all of the above were no-ops.
       ok(stored(["baz.com"]), "Data stored for baz.com");
 
       // Clear everything for baz.com.
-      pluginHost.clearSiteData(pluginTag, "baz.com", FLAG_CLEAR_ALL, -1, {callback(rv) { test14(); }});
+      pluginHost.clearSiteData(this.pluginTag, "baz.com", FLAG_CLEAR_ALL, -1, {callback(rv) { test14(); }});
     }
     function test14() {
       ok(!stored(["baz.com"]), "Data cleared for baz.com");
@@ -175,7 +175,7 @@
          "Data stored for sites");
 
       // Clear data for "foo.com" and its subdomains.
-      pluginHost.clearSiteData(pluginTag, "foo.com", FLAG_CLEAR_ALL, -1, {callback(rv) { test15(); }});
+      pluginHost.clearSiteData(this.pluginTag, "foo.com", FLAG_CLEAR_ALL, -1, {callback(rv) { test15(); }});
     }
     function test15() {
       ok(stored(["bar.com", "192.168.1.1", "localhost"]), "Data stored for sites");
@@ -183,19 +183,19 @@
       ok(!stored(["bar.foo.com"]), "Data cleared for subdomains of foo.com");
 
       // Clear data for "bar.com" using a subdomain.
-      pluginHost.clearSiteData(pluginTag, "foo.bar.com", FLAG_CLEAR_ALL, -1, {callback(rv) { test16(); }});
+      pluginHost.clearSiteData(this.pluginTag, "foo.bar.com", FLAG_CLEAR_ALL, -1, {callback(rv) { test16(); }});
     }
     function test16() {
       ok(!stored(["bar.com"]), "Data cleared for bar.com");
 
       // Clear data for "192.168.1.1".
-      pluginHost.clearSiteData(pluginTag, "192.168.1.1", FLAG_CLEAR_ALL, -1, {callback(rv) { test17(); }});
+      pluginHost.clearSiteData(this.pluginTag, "192.168.1.1", FLAG_CLEAR_ALL, -1, {callback(rv) { test17(); }});
     }
     function test17() {
       ok(!stored(["192.168.1.1"]), "Data cleared for 192.168.1.1");
 
       // Clear data for "localhost".
-      pluginHost.clearSiteData(pluginTag, "localhost", FLAG_CLEAR_ALL, -1, {callback(rv) { test18(); }});
+      pluginHost.clearSiteData(this.pluginTag, "localhost", FLAG_CLEAR_ALL, -1, {callback(rv) { test18(); }});
     }
     function test18() {
       ok(!stored(null), "All data cleared");
@@ -211,14 +211,14 @@
          "Data stored for sites");
 
       // Clear data for the UTF-8 version.
-      pluginHost.clearSiteData(pluginTag, "b\u00FCcher.es", FLAG_CLEAR_ALL, -1, {callback(rv) { test19(); }});
+      pluginHost.clearSiteData(this.pluginTag, "b\u00FCcher.es", FLAG_CLEAR_ALL, -1, {callback(rv) { test19(); }});
     }
     function test19() {
       ok(!stored(["b\u00FCcher.es"]), "Data cleared for UTF-8 representation");
       ok(!stored(["xn--bcher-kva.es"]), "Data cleared for ACE representation");
 
       // Clear data for the ACE version.
-      pluginHost.clearSiteData(pluginTag, "xn--bcher-kva.uk", FLAG_CLEAR_ALL, -1, {callback(rv) { test20(); }});
+      pluginHost.clearSiteData(this.pluginTag, "xn--bcher-kva.uk", FLAG_CLEAR_ALL, -1, {callback(rv) { test20(); }});
     }
     function test20() {
       ok(!stored(["b\u00FCcher.uk"]), "Data cleared for UTF-8 representation");
@@ -229,7 +229,7 @@
       // strictly required, we test it here.
       ok(stored(["b\u00FCcher.nz", "xn--bcher-kva.nz"]),
          "Data stored for sites");
-      pluginHost.clearSiteData(pluginTag, "b\u00FCcher.nz", FLAG_CLEAR_ALL, -1, {callback(rv) { test21(); }});
+      pluginHost.clearSiteData(this.pluginTag, "b\u00FCcher.nz", FLAG_CLEAR_ALL, -1, {callback(rv) { test21(); }});
     }
     function test21() {
       ok(!stored(["b\u00FCcher.nz"]), "Data cleared for UTF-8 representation");

dom/plugins/test/mochitest/test_crashing.html

@@ -41,9 +41,9 @@
     }
 
     window.frameLoaded = function reloaded() {
-      var p = iframe.contentDocument.getElementById("plugin1");
+      var p1 = iframe.contentDocument.getElementById("plugin1");
       try {
-        p.setColor("FF00FF00");
+        p1.setColor("FF00FF00");
         ok(true, "Reloading worked");
       } catch (e) {
         ok(false, "Reloading didn't give us a usable plugin");

dom/plugins/test/mochitest/test_hanging.html

@@ -35,9 +35,9 @@
     }
 
     window.frameLoaded = function reloaded() {
-      var p = iframe.contentDocument.getElementById("plugin1");
+      var p1 = iframe.contentDocument.getElementById("plugin1");
       try {
-        p.setColor("FF00FF00");
+        p1.setColor("FF00FF00");
         ok(true, "Reloading worked");
       } catch (e) {
         ok(false, "Reloading didn't give us a usable plugin");

dom/plugins/test/mochitest/test_hangui.xul

@@ -26,8 +26,6 @@ SpecialPowers.pushPrefEnv({"set": [["security.allow_eval_with_system_principal",
                                     true]]});
 setTestPluginEnabledState(SpecialPowers.Ci.nsIPluginTag.STATE_ENABLED);
 
-const {Services} = ChromeUtils.import("resource://gre/modules/Services.jsm");
-
 const hangUITimeoutPref = "dom.ipc.plugins.hangUITimeoutSecs";
 const hangUIMinDisplayPref = "dom.ipc.plugins.hangUIMinDisplaySecs";
 const timeoutPref = "dom.ipc.plugins.timeoutSecs";

dom/plugins/test/mochitest/test_hidden_plugin.html

@@ -14,10 +14,9 @@
     let ph = SpecialPowers.Cc["@mozilla.org/plugin/host;1"].getService(SpecialPowers.Ci.nsIPluginHost);
     let plugins = ph.getPluginTags();
     let testPluginName = plugins[0].name;
-    let oldPrefVal = null;
     let prefName = "plugins.navigator.hidden_ctp_plugin";
     try {
-      oldPrefVal = SpecialPowers.getCharPref(prefName);
+      SpecialPowers.getCharPref(prefName);
     } catch (ex) {}
     let promise = SpecialPowers.pushPrefEnv({ set: [[prefName, testPluginName]]});
     promise.then(function() {

dom/plugins/test/mochitest/test_instance_re-parent.html

@@ -29,6 +29,7 @@
       d1.appendChild(p);
 
       // Forces the plugin to be respawned
+      // eslint-disable-next-line no-self-assign
       p.src = p.src;
 
       destroyed = false;

dom/plugins/test/mochitest/test_npruntime_npnevaluate.html

@@ -39,6 +39,7 @@
       ["function test() { return 3; } test();", 3],
       ["testMe(3)", 6],
       ["testMe(new Object(3))", 6],
+      // eslint-disable-next-line no-new-object
       ["new Object(3)", new Object(3)],
       ["new Array(1, 2, 3, 4)", [1, 2, 3, 4]],
       ["document.getElementById('display')",

dom/plugins/test/mochitest/test_npruntime_npninvoke.html

@@ -26,8 +26,8 @@
   function returnArgs() {
     if (arguments.length == 1)
       return arguments[0];
-    var arr = new Array();
-    for (i = 0; i < arguments.length; i++) {
+    var arr = [];
+    for (var i = 0; i < arguments.length; i++) {
       arr.push(arguments[i]);
     }
     return arr;

dom/plugins/test/mochitest/test_npruntime_npninvokedefault.html

@@ -48,6 +48,7 @@
     ["Boolean", true, true],
     ["Boolean", "true", true],
     ["Boolean", "false", true],
+    /* eslint-disable no-new-wrappers */
     ["Boolean", new Boolean(false), true],
     ["Boolean", { "value": false }, true],
     // Function object
@@ -60,6 +61,7 @@
     ["Object", Boolean(), new Boolean(false)],
     ["Object", "a string", new String("a string")],
     ["Object", 3.14, new Number(3.14)],
+    /* eslint-enable no-new-wrappers */
     ["Object", { "key1": "test", "key2": 15 }, { "key1": "test", "key2": 15 }],
     ["Object", [1, 3, 5, 7, 9, 11, 13, 17], [1, 3, 5, 7, 9, 11, 13, 17]],
     // RegExp object

dom/plugins/test/mochitest/test_object.html

@@ -244,7 +244,7 @@ function eachList() {
   },
       };
 
-
+      // eslint-disable-next-line complexity
       function testObject(obj, state) {
         // If our test combination both sets noChannel but no explicit type
         // it shouldn't load ever.
@@ -316,7 +316,7 @@ function eachList() {
         // should spawn synchronously.
         let scripted = false;
         try {
-          let x = obj.getObjectValue();
+          obj.getObjectValue();
           scripted = true;
         } catch (e) {}
         is(scripted, shouldBeSpawnable, "check plugin scriptability");

dom/plugins/test/mochitest/test_painting.html

@@ -86,6 +86,7 @@ function waitForPaint(func) {
   // Ensure the waiter has had a style change, so that this will
   // change its size and cause a paint.
   paint_waiter.style.backgroundColor = paint_waiter.style.backgroundColor == "blue" ? "yellow" : "blue";
+  // eslint-disable-next-line no-unused-vars
   var flush = paint_waiter.offsetHeight;
   paint_waiter.style.height = "1px";
   waitForPaintHelper(func);

dom/plugins/test/mochitest/test_pluginstream_err.html

@@ -127,7 +127,7 @@ function continueTest() {
   var test = tests[Math.floor(index / 2)];
 
   var p = gTestWindow.document.createElement("p");
-  p.innerHTML = "Plugin Stream Test " + index;
+  p.textContent = "Plugin Stream Test " + Number(index);
   gTestWindow.document.getElementById("test").appendChild(p);
 
   if (test.frame) {

dom/plugins/test/mochitest/test_positioning.html

@@ -38,7 +38,7 @@
   var startY;
 
   function doScroll() {
-    let [x, y, w, h] = p.getWindowPosition();
+    let y = p.getWindowPosition()[1];
     startY = y;
 
     scrollBy(0, kScrollAmount);
@@ -46,7 +46,7 @@
   }
 
   function checkScroll() {
-    let [x, y, w, h] = p.getWindowPosition();
+    let y = p.getWindowPosition()[1];
 
     is(y, startY - kScrollAmount, "Window should be informed of its new position.");
     SimpleTest.finish();

dom/plugins/test/mochitest/test_src_url_change.html

@@ -17,7 +17,7 @@
   }
 
   function runTests() {
-    p = document.getElementById("plugin1");
+    var p = document.getElementById("plugin1");
 
     p.startWatchingInstanceCount();
     p.callOnDestroy(onDestroy);

dom/plugins/test/mochitest/test_visibility.html

@@ -20,6 +20,8 @@
 
   var didPaint = function() {};
 
+  var p = null;
+
   function startTest() {
     if (p.getPaintCount() < 1) {
       setTimeout(startTest, 0);