Bug 1359061 - Report WR state via ScopedGfxFeatureReporter in all processes. r=dvander

We were only reporting the WR feature state in crash reports from the parent
process. However, it would be useful to have in GPU and content process crash
reports as well, so use the ScopedGfxFeatureReporter in those processes as well.

MozReview-Commit-ID: Em37uLVPboK

--HG--
extra : rebase_source : c5bae376d084b7579308dcf1f5fb6186a231a868

gfx/thebes/gfxPlatform.cpp

@@ -710,9 +710,7 @@ gfxPlatform::Init()
     #error "No gfxPlatform implementation available"
 #endif
     gPlatform->InitAcceleration();
-    if (XRE_IsParentProcess()) {
-      gPlatform->InitWebRenderConfig();
-    }
+    gPlatform->InitWebRenderConfig();
 
     if (gfxConfig::IsEnabled(Feature::GPU_PROCESS)) {
       GPUProcessManager* gpu = GPUProcessManager::Get();
@@ -2337,6 +2335,19 @@ gfxPlatform::InitCompositorAccelerationPrefs()
 void
 gfxPlatform::InitWebRenderConfig()
 {
+  bool prefEnabled = Preferences::GetBool("gfx.webrender.enabled", false);
+
+  ScopedGfxFeatureReporter reporter("WR", prefEnabled);
+  if (!XRE_IsParentProcess()) {
+    // The parent process runs through all the real decision-making code
+    // later in this function. For other processes we still want to report
+    // the state of the feature for crash reports.
+    if (gfxVars::UseWebRender()) {
+      reporter.SetSuccessful();
+    }
+    return;
+  }
+
   FeatureState& featureWebRender = gfxConfig::GetFeature(Feature::WEBRENDER);
 
   featureWebRender.DisableByDefault(
@@ -2344,13 +2355,10 @@ gfxPlatform::InitWebRenderConfig()
       "WebRender is an opt-in feature",
       NS_LITERAL_CSTRING("FEATURE_FAILURE_DEFAULT_OFF"));
 
-  bool prefEnabled = Preferences::GetBool("gfx.webrender.enabled", false);
   if (prefEnabled) {
     featureWebRender.UserEnable("Enabled by pref");
   }
 
-  ScopedGfxFeatureReporter reporter("WR", prefEnabled);
-
   // WebRender relies on the GPU process when on Windows
 #ifdef XP_WIN
   if (!gfxConfig::IsEnabled(Feature::GPU_PROCESS)) {