Bug 1277320 - Run GTests on all Windows flavors as Tier 1. r=glandium

Differential Revision: https://phabricator.services.mozilla.com/D133450

moz.configure

@@ -639,22 +639,18 @@ def check_objdir_backend_reuse(build_env, backends):
 #  - Windows PGO, where linking xul-gtest.dll takes too long;
 #  - Android other than x86_64, where gtest is not required.
 @depends(
-    "MOZ_PGO",
     build_project,
     target,
     "MOZ_AUTOMATION",
     enable_tests,
     when="--enable-compile-environment",
 )
-def build_gtest(pgo, build_project, target, automation, enable_tests):
+def build_gtest(build_project, target, automation, enable_tests):
     return bool(
         enable_tests
         and automation
         and build_project in ("browser", "comm/mail", "mobile/android")
-        and not (
-            (pgo and target.os == "WINNT")
-            or (target.os == "Android" and target.cpu != "x86_64")
-        )
+        and not (target.os == "Android" and target.cpu != "x86_64")
     )
 
 

taskcluster/ci/test/compiled.yml

@@ -48,8 +48,6 @@ gtest:
     instance-size: xlarge
     run-on-projects:
         by-test-platform:
-            windows.*-shippable-qr/.*: []  # permafails on shippable
-            windows.*-nightly-qr/.*: []  # permafails on nightly too
             .*-devedition.*/.*: []  # don't run on devedition
             linux1804-32-qr/debug: ['mozilla-central']  # try and m-c
             linux1804-32-qr/opt: []  # try only, shippable on m-c
@@ -59,12 +57,7 @@ gtest:
         by-test-platform:
             android-em-7.*: geckoview-test_runner.apk
             default: null
-    tier:
-        by-test-platform:
-            windows7-32-shippable.*: 3
-            windows10-64-2004-shippable.*: 3
-            windows10-64-2004-asan.*: 3
-            default: default
+    tier: default
 
 jittest:
     description: "JIT Test run"