Revert of Post loading tasks on the appropriate WebFrameScheduler's queue

content/renderer/renderer_blink_platform_impl.h

Index: content/renderer/renderer_blink_platform_impl.h
diff --git a/content/renderer/renderer_blink_platform_impl.h b/content/renderer/renderer_blink_platform_impl.h
index 32edd5fb15c95774d9cde1983a966ca59b6ca97a..6a64c595196f1196d3fe736c140190fed779d4d0 100644
--- a/content/renderer/renderer_blink_platform_impl.h
+++ b/content/renderer/renderer_blink_platform_impl.h
@@ -205,8 +205,6 @@
     return web_database_observer_impl_.get();
   }
 
-  blink::WebURLLoader* createURLLoader() override;
-
  private:
   bool CheckPreparsedJsCachingEnabled() const;
 
@@ -256,7 +254,6 @@
   scoped_ptr<DeviceOrientationEventPump> device_orientation_event_pump_;
 
   scoped_refptr<base::SingleThreadTaskRunner> default_task_runner_;
-  scoped_refptr<base::SingleThreadTaskRunner> loading_task_runner_;
   scoped_refptr<IPC::SyncMessageFilter> sync_message_filter_;
   scoped_refptr<ThreadSafeSender> thread_safe_sender_;
   scoped_refptr<QuotaMessageFilter> quota_message_filter_;