Bug 1397258 - migrate mochitest-webgl to windows 10. r=ahal

taskcluster/ci/test/test-sets.yml

@@ -317,7 +317,6 @@ android-x86-tests:
 
 windows8-tests:
     - reftest-no-accel
-    - mochitest-webgl
 
 devtools-tests:
     - mochitest-devtools-chrome

taskcluster/ci/test/tests.yml

@@ -970,17 +970,13 @@ mochitest-webgl:
     virtualization: virtual-with-gpu
     run-on-projects:
         by-test-platform:
-            # Deactivate try on Buildbot, by default. We don't have enough machines
-            windows8-64.*: ['mozilla-release', 'mozilla-beta', 'mozilla-central', 'mozilla-inbound', 'autoland']
-            windows8-64-devedition/opt: built-projects  # No dev edition outside of supported branches
-            windows10.*: []
             linux.*-stylo.*: ['autoland', 'mozilla-central', 'try']
             macosx64-stylo.*: ['mozilla-central', 'try']
             windows7-32-stylo.*: ['autoland', 'mozilla-central', 'try']
             default: built-projects
     worker-type:
         by-test-platform:
-            windows8-64.*: buildbot-bridge/buildbot-bridge
+            windows10-64.*: buildbot-bridge/buildbot-bridge
             default: null
     chunks:
         by-test-platform: