Test to remove calls to tab idleNotification, to try and diagnose a bug. This...

Test to remove calls to tab idleNotification, to try and diagnose a bug.  This will be removed after a Canary run.

BUG=381820

Review URL: https://codereview.chromium.org/371293006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@281901 0039d316-1c4b-4281-b951-d872f2087c98

content/public/renderer/content_renderer_client.cc

@@ -85,7 +85,9 @@ blink::WebSpeechSynthesizer* ContentRendererClient::OverrideSpeechSynthesizer(
 }
 
 bool ContentRendererClient::RunIdleHandlerWhenWidgetsHidden() {
-  return true;
+  // TODO(wfh): http://crbug.com/381820 change this back to true after testing
+  // whether this affects tabs hanging.
+  return false;
 }
 
 bool ContentRendererClient::AllowPopup() {

content/renderer/render_thread_impl.cc

@@ -1564,8 +1564,11 @@ void RenderThreadImpl::WidgetHidden() {
 #if !defined(SYSTEM_NATIVELY_SIGNALS_MEMORY_PRESSURE)
     // TODO(vollick): Remove this this heavy-handed approach once we're polling
     // the real system memory pressure.
-    base::MemoryPressureListener::NotifyMemoryPressure(
-        base::MemoryPressureListener::MEMORY_PRESSURE_MODERATE);
+
+    // TODO(wfh): http://crbug.com/381820 remove this after testing whether
+    // this affects tabs hanging.
+    // base::MemoryPressureListener::NotifyMemoryPressure(
+    //     base::MemoryPressureListener::MEMORY_PRESSURE_MODERATE);
 #endif
     if (GetContentClient()->renderer()->RunIdleHandlerWhenWidgetsHidden())
       ScheduleIdleHandler(kInitialIdleHandlerDelayMs);