WebThreadImplForMessageLoop to use blink scheduler

content/renderer/renderer_blink_platform_impl.cc

Index: content/renderer/renderer_blink_platform_impl.cc
diff --git a/content/renderer/renderer_blink_platform_impl.cc b/content/renderer/renderer_blink_platform_impl.cc
index c9b3e60cf1ea47f770748f0e5602765033c1c314..7e69307adcc2ffb2cf97f83cb17edcd2cdc4c0b4 100644
--- a/content/renderer/renderer_blink_platform_impl.cc
+++ b/content/renderer/renderer_blink_platform_impl.cc
@@ -27,6 +27,7 @@
 #include "content/child/webblobregistry_impl.h"
 #include "content/child/webfileutilities_impl.h"
 #include "content/child/webmessageportchannel_impl.h"
+#include "content/child/webthread_impl.h"
 #include "content/common/file_utilities_messages.h"
 #include "content/common/gpu/client/context_provider_command_buffer.h"
 #include "content/common/gpu/client/gpu_channel_host.h"
@@ -252,6 +253,8 @@ RendererBlinkPlatformImpl::RendererBlinkPlatformImpl()
     web_database_observer_impl_.reset(
         new WebDatabaseObserverImpl(sync_message_filter_.get()));
   }
+
+  main_thread_task_runner_ = renderer_scheduler_->DefaultTaskRunner();
 }
 
 RendererBlinkPlatformImpl::~RendererBlinkPlatformImpl() {
@@ -260,12 +263,6 @@ RendererBlinkPlatformImpl::~RendererBlinkPlatformImpl() {
 
 //------------------------------------------------------------------------------
 
-void RendererBlinkPlatformImpl::callOnMainThread(void (*func)(void*),
-                                                 void* context) {
-  renderer_scheduler_->DefaultTaskRunner()->PostTask(FROM_HERE,
-                                                     base::Bind(func, context));
-}
-
 blink::WebScheduler* RendererBlinkPlatformImpl::scheduler() {
   return web_scheduler_.get();
 }