Plumb physical backing size from RWHV to renderer CC.

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 250 matching lines @@
   void DoDeferredSetWindowRect(const WebKit::WebRect& pos);
   virtual void Composite();
 
   // Set the background of the render widget to a bitmap. The bitmap will be
   // tiled in both directions if it isn't big enough to fill the area. This is
   // mainly intended to be used in conjuction with WebView::SetIsTransparent().
   virtual void SetBackground(const SkBitmap& bitmap);
 
   // Resizes the render widget.
   void Resize(const gfx::Size& new_size,
+              const gfx::Size& physical_backing_size,
               const gfx::Rect& resizer_rect,
               bool is_fullscreen,
               ResizeAck resize_ack);
 
   // RenderWidget IPC message handlers
   void OnClose();
   void OnCreatingNewAck();
   virtual void OnResize(const gfx::Size& new_size,
+                        const gfx::Size& physical_backing_size,
                         const gfx::Rect& resizer_rect,
                         bool is_fullscreen);
   void OnChangeResizeRect(const gfx::Rect& resizer_rect);
   virtual void OnWasHidden();
   virtual void OnWasShown(bool needs_repainting);
   virtual void OnWasSwappedOut();
   void OnUpdateRectAck();
   void OnCreateVideoAck(int32 video_id);
   void OnUpdateVideoAck(int32 video_id);
   void OnRequestMoveAck();
@@ skipping 203 matching lines @@
   WebCursor current_cursor_;
 
   // The size of the RenderWidget.
   gfx::Size size_;
 
   // The TransportDIB that is being used to transfer an image to the browser.
   TransportDIB* current_paint_buf_;
 
   PaintAggregator paint_aggregator_;
 
+  // The size of the view's backing surface in non-DPI-adjusted pixels.
+  gfx::Size physical_backing_size_;
+
   // The area that must be reserved for drawing the resize corner.
   gfx::Rect resizer_rect_;
 
   // Flags for the next ViewHostMsg_UpdateRect message.
   int next_paint_flags_;
 
   // Filtered time per frame based on UpdateRect messages.
   float filtered_time_per_frame_;
 
   // True if we are expecting an UpdateRect_ACK message (i.e., that a
@@ skipping 142 matching lines @@
 
   // Specified whether the compositor will run in its own thread.
   bool is_threaded_compositing_enabled_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidget);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDER_WIDGET_H_