Implement Main Thread RAF Aligned Input

content/renderer/render_widget.h

 // 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.
 
 #ifndef CONTENT_RENDERER_RENDER_WIDGET_H_
 #define CONTENT_RENDERER_RENDER_WIDGET_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 166 matching lines @@
   void RegisterVideoHoleFrame(RenderFrameImpl* frame);
   void UnregisterVideoHoleFrame(RenderFrameImpl* frame);
 #endif  // defined(VIDEO_HOLE)
 
   // IPC::Listener
   bool OnMessageReceived(const IPC::Message& msg) override;
 
   // IPC::Sender
   bool Send(IPC::Message* msg) override;
 
+  // Requests a BeginMainFrame callback from the compositor.
+  void SetNeedsMainFrame();
+
   // RenderWidgetCompositorDelegate
   void ApplyViewportDeltas(const gfx::Vector2dF& inner_delta,
                            const gfx::Vector2dF& outer_delta,
                            const gfx::Vector2dF& elastic_overscroll_delta,
                            float page_scale,
                            float top_controls_delta) override;
   void BeginMainFrame(double frame_time_sec) override;
   std::unique_ptr<cc::OutputSurface> CreateOutputSurface(
       bool fallback) override;
   std::unique_ptr<cc::BeginFrameSource> CreateExternalBeginFrameSource()
@@ skipping 597 matching lines @@
   // This reference is set by the RenderFrame and is used to query the IME-
   // related state from the plugin to later send to the browser.
   PepperPluginInstanceImpl* focused_pepper_plugin_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidget);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDER_WIDGET_H_