Bug 1339167 - Enable mochitest-gpu for linux64-qr builds on the graphics branch. r=dustin

MozReview-Commit-ID: 3la2fM79tyS

--HG--
extra : rebase_source : bba2c203525b0d20f938eee15c6bdfe8387bcf83

taskcluster/ci/test/test-sets.yml

@@ -78,6 +78,7 @@ qr-tests:
     - jittest
     - jsreftest
     - mochitest-a11y
+    - mochitest-gpu
     - reftest
     - reftest-no-accel
     - xpcshell

taskcluster/ci/test/tests.yml

@@ -650,6 +650,10 @@ mochitest-gpu:
     treeherder-symbol: tc-M(gpu)
     loopback-video: true
     docker-image: {"in-tree": "desktop1604-test"}
+    run-on-projects:
+        by-test-platform:
+            linux64-qr/.*: ['graphics']
+            default: ['all']
     e10s:
         by-test-platform:
             windows.*: both