content: Add RendererScheduler.

content/renderer/render_thread_impl.cc

Index: content/renderer/render_thread_impl.cc
diff --git a/content/renderer/render_thread_impl.cc b/content/renderer/render_thread_impl.cc
index 7677ac58692a1cea119687e28f778c2ee8484364..d22214bf065eee224e463a163501320b1e253b7e 100644
--- a/content/renderer/render_thread_impl.cc
+++ b/content/renderer/render_thread_impl.cc
@@ -93,6 +93,7 @@
 #include "content/renderer/render_process_impl.h"
 #include "content/renderer/render_view_impl.h"
 #include "content/renderer/renderer_blink_platform_impl.h"
+#include "content/renderer/scheduler/renderer_scheduler.h"
 #include "content/renderer/service_worker/embedded_worker_context_message_filter.h"
 #include "content/renderer/service_worker/embedded_worker_dispatcher.h"
 #include "content/renderer/shared_worker/embedded_shared_worker_stub.h"
@@ -851,7 +852,8 @@ void RenderThreadImpl::EnsureWebKitInitialized() {
 
   const CommandLine& command_line = *CommandLine::ForCurrentProcess();
 
-  main_thread_compositor_task_runner_ = base::MessageLoopProxy::current();
+  main_thread_compositor_task_runner_ =
+      blink_platform_impl_->renderer_scheduler()->CompositorTaskRunner();
 
   bool enable = !command_line.HasSwitch(switches::kDisableThreadedCompositing);
   if (enable) {