Forward compositor and input tasks to the Blink scheduler

content/renderer/render_thread_impl.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/renderer/render_thread_impl.h"
 
 #include <algorithm>
 #include <limits>
 #include <map>
 #include <vector>
@@ skipping 821 matching lines @@
     ResourceDispatcherDelegate* delegate) {
   resource_dispatcher()->set_delegate(delegate);
 }
 
 void RenderThreadImpl::EnsureWebKitInitialized() {
   if (blink_platform_impl_)
     return;
 
   blink_platform_impl_.reset(new RendererBlinkPlatformImpl);
   blink::initialize(blink_platform_impl_.get());
-  main_thread_compositor_task_runner_ = base::MessageLoopProxy::current();
 
   v8::Isolate* isolate = blink::mainThreadIsolate();
 
   isolate->SetCounterFunction(base::StatsTable::FindLocation);
   isolate->SetCreateHistogramFunction(CreateHistogram);
   isolate->SetAddHistogramSampleFunction(AddHistogramSample);
 
   const CommandLine& command_line = *CommandLine::ForCurrentProcess();
 
+  if (!command_line.HasSwitch(switches::kDisableBlinkScheduler)) {
+    main_thread_compositor_task_runner_ =
+        make_scoped_refptr(new SchedulerProxyTaskRunner<
+            &blink::WebSchedulerProxy::postCompositorTask>());
+  } else {
+    main_thread_compositor_task_runner_ = base::MessageLoopProxy::current();
+  }
+

[picksi1, 2014/10/08 12:44:37]

Stylistic Nit: I'd favor swapping the if/else and removing the '!'

[Sami, 2014/10/08 12:54:32]

Done.

   bool enable = !command_line.HasSwitch(switches::kDisableThreadedCompositing);
   if (enable) {
 #if defined(OS_ANDROID)
     if (SynchronousCompositorFactory* factory =
         SynchronousCompositorFactory::GetInstance())
       compositor_message_loop_proxy_ =
           factory->GetCompositorMessageLoop();
 #endif
     if (!compositor_message_loop_proxy_.get()) {
       compositor_thread_.reset(new base::Thread("Compositor"));
@@ skipping 758 matching lines @@
   hidden_widget_count_--;
 
   if (!GetContentClient()->renderer()->RunIdleHandlerWhenWidgetsHidden()) {
     return;
   }
 
   ScheduleIdleHandler(kLongIdleHandlerDelayMs);
 }
 
 }  // namespace content