Implementation of device metrics emulation in render view.

content/browser/renderer_host/render_widget_host_impl.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_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_IMPL_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_IMPL_H_
 
 #include <deque>
 #include <list>
 #include <map>
@@ skipping 630 matching lines @@
   void OnCompositorSurfaceBuffersSwapped(
       const ViewHostMsg_CompositorSurfaceBuffersSwapped_Params& params);
 #endif
   bool OnSwapCompositorFrame(const IPC::Message& message);
   void OnOverscrolled(gfx::Vector2dF accumulated_overscroll,
                       gfx::Vector2dF current_fling_velocity);
   void OnUpdateRect(const ViewHostMsg_UpdateRect_Params& params);
   void OnUpdateIsDelayed();
   void OnBeginSmoothScroll(
       const ViewHostMsg_BeginSmoothScroll_Params& params);
+  void OnEmulateDevice(bool enabled);
   virtual void OnFocus();
   virtual void OnBlur();
   void OnSetCursor(const WebCursor& cursor);
   void OnTextInputTypeChanged(ui::TextInputType type,
                               bool can_compose_inline,
                               ui::TextInputMode input_mode);
 #if defined(OS_MACOSX) || defined(OS_WIN) || defined(USE_AURA)
   void OnImeCompositionRangeChanged(
       const ui::Range& range,
       const std::vector<gfx::Rect>& character_bounds);
@@ skipping 255 matching lines @@
   int64 last_input_number_;
 
   BrowserRenderingStats rendering_stats_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_IMPL_H_