diff --git a/.gitignore b/.gitignore
index 1ffa1209dd3c..5cbae5037da5 100644
--- a/.gitignore
+++ b/.gitignore
@@ -90,9 +90,6 @@ GPATH
 # Git clone directory for updating web-platform-tests
 testing/web-platform/sync/
 
-# Third party metadata for web-platform-tests
-testing/web-platform/products/
-
 # Android Gradle artifacts.
 mobile/android/gradle/.gradle
 
diff --git a/.hgignore b/.hgignore
index a79e9f56435d..9948907586c2 100644
--- a/.hgignore
+++ b/.hgignore
@@ -98,9 +98,6 @@ GPATH
 # Git clone directory for updating web-platform-tests
 ^testing/web-platform/sync/
 
-# Third party metadata for web-platform-tests
-^testing/web-platform/products/
-
 # Android Gradle artifacts.
 ^mobile/android/gradle/.gradle
 
diff --git a/testing/web-platform/README.md b/testing/web-platform/README.md
index 4ed178870ec4..b8e353dcf5ae 100644
--- a/testing/web-platform/README.md
+++ b/testing/web-platform/README.md
@@ -235,14 +235,45 @@ Running Tests In Other Browsers
 
 web-platform-tests is cross browser, and the runner is compatible with
 multiple browsers. Therefore it's possible to check the behaviour of
-tests in other browsers. By default Chrome, Edge and Servo are
-supported. In order to run the tests in these browsers use the
-`--product` argument to wptrunner:
+tests in other browsers. This is somewhat more involved than running
+them in Firefox since extra dependencies may be required. For example
+to test in Chrome:
 
-    mach wpt --product chrome dom/historical.html
+1. Download the chromedriver binary and place it somewhere sensible
+   e.g. `~/bin`
 
-By default these browsers run without expectation metadata, but it can
-be added in the `testing/web-platform/products/<product>`
-directory. To run with the same metadata as for Firefox (so that
-differences are reported as unexpected results), pass `--meta
-testing/web-platform/meta` to the mach command.
+2. In your gecko source tree activate the virtualenv created by mach,
+   since this has most dependencies already installed. This is typically
+   in objdir/_virtualenv and is activated via e.g.
+
+        source objdir/_virtualenv/bin/activate
+
+3. Install the extra requirements:
+
+        cd testing/web-platform/harness
+        pip install -r requirements_chrome.txt
+
+4. Edit the config file `testing/web-platform/wptrunner.ini` so that
+   Chrome support is enabled by changing the section that reads:
+
+        [products]
+        firefox =
+
+   to read
+
+        [products]
+        firefox =
+        chrome =
+
+   (alternatively create a new config file elsewhere and use the
+   `--config` option to `runtests.py` to point wptrunner at this config
+   file).
+
+5. Run `runtests.py` using the location of chromedriver as
+   the binary:
+
+        cd testing/web-platform
+        python runtests.py --product=chrome --binary=~/bin/chromedriver --log-mach=-
+
+By default this will use the same test checkout and metadata as are in
+the Gecko tree, so it's easy to compare behaviour relative to Firefox.
diff --git a/testing/web-platform/mach_commands.py b/testing/web-platform/mach_commands.py
index 3826b2494e3d..0f85d1eb7b9f 100644
--- a/testing/web-platform/mach_commands.py
+++ b/testing/web-platform/mach_commands.py
@@ -28,7 +28,7 @@ class InvalidTestPathError(Exception):
 class WebPlatformTestsRunner(MozbuildObject):
     """Run web platform tests."""
 
-    def setup_kwargs_firefox(self, kwargs):
+    def setup_kwargs(self, kwargs):
         from wptrunner import wptcommandline
 
         build_path = os.path.join(self.topobjdir, 'build')
@@ -67,50 +67,10 @@ class WebPlatformTestsRunner(MozbuildObject):
 
         kwargs = wptcommandline.check_args(kwargs)
 
-    def setup_kwargs_wptrun(self, kwargs):
-        from wptrunner import wptcommandline
-        here = os.path.join(self.topsrcdir, 'testing', 'web-platform')
-
-        sys.path.insert(0, os.path.join(here, "tests", "tools"))
-
-        import wptrun
-
-        setup_func = {
-            "chrome": wptrun.setup_chrome,
-            "edge": wptrun.setup_edge,
-            "servo": wptrun.setup_servo,
-        }[kwargs["product"]]
-
-        setup_func(wptrun.virtualenv.Virtualenv(self.virtualenv_manager.virtualenv_root),
-                   kwargs,
-                   True)
-
-        kwargs["tests_root"] = os.path.join(here, "tests")
-
-        if kwargs["metadata_root"] is None:
-            metadir = os.path.join(here, "products", kwargs["product"])
-            if not os.path.exists(metadir):
-                os.makedirs(metadir)
-            kwargs["metadata_root"] = metadir
-
-        src_manifest = os.path.join(here, "meta", "MANIFEST.json")
-        dest_manifest = os.path.join(kwargs["metadata_root"], "MANIFEST.json")
-
-        if not os.path.exists(dest_manifest) and os.path.exists(src_manifest):
-            with open(src_manifest) as src, open(dest_manifest, "w") as dest:
-                dest.write(src.read())
-
-        kwargs = wptcommandline.check_args(kwargs)
-
     def run_tests(self, **kwargs):
         from wptrunner import wptrunner
 
-        if kwargs["product"] in ["firefox", None]:
-            self.setup_kwargs_firefox(kwargs)
-        elif kwargs["product"] in ("chrome", "edge", "servo"):
-            self.setup_kwargs_wptrun(kwargs)
-        else:
-            raise ValueError("Unknown product %s" % kwargs["product"])
+        self.setup_kwargs(kwargs)
 
         logger = wptrunner.setup_logging(kwargs, {"mach": sys.stdout})
         result = wptrunner.run_tests(**kwargs)
@@ -298,7 +258,7 @@ class WPTManifestUpdater(MozbuildObject):
 
 def create_parser_wpt():
     from wptrunner import wptcommandline
-    return wptcommandline.create_parser(["firefox", "chrome", "edge", "servo"])
+    return wptcommandline.create_parser(["firefox"])
 
 def create_parser_update():
     from update import updatecommandline
diff --git a/testing/web-platform/products/README b/testing/web-platform/products/README
deleted file mode 100644
index 81a111472e73..000000000000
--- a/testing/web-platform/products/README
+++ /dev/null
@@ -1,3 +0,0 @@
-This directory is for storing metadata files when running
-web-platform-tests with non-firefox browsers. By default all
-subdirectories here are ignored in VCS.
\ No newline at end of file
diff --git a/testing/web-platform/tests/tools/wptrunner/requirements_firefox.txt b/testing/web-platform/tests/tools/wptrunner/requirements_firefox.txt
index d8d268f127bd..379e522acc45 100644
--- a/testing/web-platform/tests/tools/wptrunner/requirements_firefox.txt
+++ b/testing/web-platform/tests/tools/wptrunner/requirements_firefox.txt
@@ -3,4 +3,3 @@ mozprofile >= 0.21
 mozprocess >= 0.19
 mozcrash >= 0.13
 mozrunner >= 6.7
-mozleak >= 0.1
diff --git a/testing/web-platform/wptrunner.ini b/testing/web-platform/wptrunner.ini
index 2d403ccebbe2..08c0d551c854 100644
--- a/testing/web-platform/wptrunner.ini
+++ b/testing/web-platform/wptrunner.ini
@@ -1,8 +1,5 @@
 [products]
 firefox =
-chrome =
-edge =
-servo =
 
 [web-platform-tests]
 remote_url = https://github.com/w3c/web-platform-tests.git