Propagate source_frame_number from LTH to DevTools

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 <deque>
 #include <map>
 
@@ skipping 194 matching lines @@
   virtual void DidCommitCompositorFrame();
 
   float filtered_time_per_frame() const {
     return filtered_time_per_frame_;
   }
 
   // Handle common setup/teardown for handling IME events.
   void StartHandlingImeEvent();
   void FinishHandlingImeEvent();
 
-  virtual void InstrumentWillBeginFrame() {}
+  virtual void InstrumentWillBeginFrame(int frame_id) {}
   virtual void InstrumentDidBeginFrame() {}
   virtual void InstrumentDidCancelFrame() {}
   virtual void InstrumentWillComposite() {}
 
   virtual bool AllowPartialSwap() const;
   bool UsingSynchronousRendererCompositor() const;
 
   bool is_swapped_out() { return is_swapped_out_; }
 
   // ScreenMetricsEmulator class manages screen emulation inside a render
@@ skipping 563 matching lines @@
   float popup_origin_scale_for_emulation_;
 
   scoped_ptr<ResizingModeSelector> resizing_mode_selector_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidget);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDER_WIDGET_H_