Remove Tabpose feature on mac, and supporting infrastructure (PaintAtSize)

content/browser/renderer_host/render_widget_host_impl.h

Index: content/browser/renderer_host/render_widget_host_impl.h
diff --git a/content/browser/renderer_host/render_widget_host_impl.h b/content/browser/renderer_host/render_widget_host_impl.h
index 546e2299737fdb679ed2c07c474d3c553076def6..b9cfc2fe235d570bf390a6859380eedb05da7634 100644
--- a/content/browser/renderer_host/render_widget_host_impl.h
+++ b/content/browser/renderer_host/render_widget_host_impl.h
@@ -160,10 +160,6 @@ class CONTENT_EXPORT RenderWidgetHostImpl : virtual public RenderWidgetHost,
   virtual RenderWidgetHostView* GetView() const OVERRIDE;
   virtual bool IsLoading() const OVERRIDE;
   virtual bool IsRenderView() const OVERRIDE;
-  virtual void PaintAtSize(TransportDIB::Handle dib_handle,
-                           int tag,
-                           const gfx::Size& page_size,
-                           const gfx::Size& desired_size) OVERRIDE;
   virtual void Replace(const base::string16& word) OVERRIDE;
   virtual void ReplaceMisspelling(const base::string16& word) OVERRIDE;
   virtual void ResizeRectChanged(const gfx::Rect& new_rect) OVERRIDE;
@@ -666,7 +662,6 @@ class CONTENT_EXPORT RenderWidgetHostImpl : virtual public RenderWidgetHost,
   void OnRequestMove(const gfx::Rect& pos);
   void OnSetTooltipText(const base::string16& tooltip_text,
                         blink::WebTextDirection text_direction_hint);
-  void OnPaintAtSizeAck(int tag, const gfx::Size& size);
 #if defined(OS_MACOSX)
   void OnCompositorSurfaceBuffersSwapped(
       const ViewHostMsg_CompositorSurfaceBuffersSwapped_Params& params);