Restore resize throttling on Chrome OS

content/browser/renderer_host/render_widget_host_view_base.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_VIEW_BASE_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_BASE_H_
 
 #if defined(OS_MACOSX)
 #include <OpenGL/OpenGL.h>
 #endif
@@ skipping 101 matching lines @@
   bool HasDisplayPropertyChanged(gfx::NativeView view);
 
   //----------------------------------------------------------------------------
   // The following methods can be overridden by derived classes.
 
   // Notifies the View that the renderer text selection has changed.
   virtual void SelectionChanged(const base::string16& text,
                                 size_t offset,
                                 const gfx::Range& range);
 
+  // The requested size of the renderer. May differ from GetViewBounds().size()
+  // when the view requires additional throttling.
+  virtual gfx::Size GetRequestedRendererSize() const;
+
   // The size of the view's backing surface in non-DPI-adjusted pixels.
   virtual gfx::Size GetPhysicalBackingSize() const;
 
   // The height of the physical backing surface that is overdrawn opaquely in
   // the browser, for example by an on-screen-keyboard (in DPI-adjusted pixels).
   virtual float GetOverdrawBottomHeight() const;
 
   // Called prior to forwarding input event messages to the renderer, giving
   // the view a chance to perform in-process event filtering or processing.
   // Return values of |NOT_CONSUMED| or |UNKNOWN| will result in |input_event|
@@ skipping 293 matching lines @@
   uint32 renderer_frame_number_;
 
   base::OneShotTimer<RenderWidgetHostViewBase> flush_input_timer_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewBase);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_BASE_H_