Bug 1595794 - Run geckoview-junit tests on emulator with webrender enabled. r=geckoview-reviewers,jmaher,agi

Differential Revision: https://phabricator.services.mozilla.com/D52682

taskcluster/ci/test/test-sets.yml

@@ -467,10 +467,11 @@ android-x86_64-tests:
 
 android-x86_64-qr-tests:
     - crashtest
-    - reftest
+    - geckoview-junit
     - mochitest-media
     - mochitest-plain
     - mochitest-plain-gpu
+    - reftest
 
 android-hw-aarch64-opt-unittests:
     - jittest

taskcluster/taskgraph/transforms/tests.py

@@ -1631,7 +1631,10 @@ def enable_webrender(config, tasks):
             extra_options = task['mozharness'].setdefault('extra-options', [])
             extra_options.append("--enable-webrender")
             # We only want to 'setpref' on tests that have a profile
-            if not task['attributes']['unittest_category'] in ['cppunittest', 'gtest', 'raptor']:
+            if not task['attributes']['unittest_category'] in ['cppunittest',
+                                                               'geckoview-junit',
+                                                               'gtest',
+                                                               'raptor']:
                 extra_options.append("--setpref=layers.d3d11.enable-blacklist=false")
 
             # run webrender variants on the projects specified on webrender-run-on-projects