Bug 1773736 - Increase max-run-time r=perftest-reviewers,afinder

Differential Revision: https://phabricator.services.mozilla.com/D166800

taskcluster/ci/test/browsertime-mobile.yml

@@ -62,6 +62,17 @@ job-defaults:
 browsertime-tp6m:
     <<: &tp6m-defaults
         description: Raptor (browsertime) tp6 page-load tests on android
+        max-run-time:
+            by-subtest:
+                reddit:
+                    by-app:
+                        geckoview: 7200
+                        default: 3600
+                imdb:
+                    by-app:
+                        geckoview: 7200
+                        default: 3600
+                default: 3600
         mozharness:
             extra-options:
                 - --chimera

taskcluster/gecko_taskgraph/transforms/test/__init__.py

@@ -151,7 +151,7 @@ test_description_schema = Schema(
         # seconds of runtime after which the task will be killed.  Like 'chunks',
         # this can be keyed by test platform, but also variant.
         Required("max-run-time"): optionally_keyed_by(
-            "test-platform", "subtest", "variant", int
+            "test-platform", "subtest", "variant", "app", int
         ),
         # the exit status code that indicates the task should be retried
         Optional("retry-exit-status"): [int],