Combine ViewHostMsg_{Paint,Scroll}Rect into one IPC....

chrome/browser/renderer_host/render_widget_host_view_win.h

 // Copyright (c) 2006-2008 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 CHROME_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_WIN_H_
 #define CHROME_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_WIN_H_
 
 #include <atlbase.h>
 #include <atlapp.h>
 #include <atlcrack.h>
@@ skipping 107 matching lines @@
       const std::vector<webkit_glue::WebPluginGeometry>& moves);
   virtual void Focus();
   virtual void Blur();
   virtual bool HasFocus();
   virtual void Show();
   virtual void Hide();
   virtual gfx::Rect GetViewBounds() const;
   virtual void UpdateCursor(const WebCursor& cursor);
   virtual void SetIsLoading(bool is_loading);
   virtual void IMEUpdateStatus(int control, const gfx::Rect& caret_rect);
-  virtual void DidPaintRect(const gfx::Rect& rect);
-  virtual void DidScrollRect(const gfx::Rect& rect, int dx, int dy);
+  virtual void DidPaintBackingStoreRects(const std::vector<gfx::Rect>& rects);
+  virtual void DidScrollBackingStoreRect(const gfx::Rect& rect, int dx, int dy);
   virtual void RenderViewGone();
   virtual void WillDestroyRenderWidget(RenderWidgetHost* rwh);
   virtual void Destroy();
   virtual void SetTooltipText(const std::wstring& tooltip_text);
   virtual BackingStore* AllocBackingStore(const gfx::Size& size);
   virtual void SetBackground(const SkBitmap& background);
 
  protected:
   // Windows Message Handlers
   LRESULT OnCreate(CREATESTRUCT* create_struct);
@@ skipping 60 matching lines @@
   // Synthesize mouse wheel event.
   LRESULT SynthesizeMouseWheel(bool is_vertical, int scroll_code,
                                short scroll_position);
 
   // Shuts down the render_widget_host_.  This is a separate function so we can
   // invoke it from the message loop.
   void ShutdownHost();
 
   // Redraws the window synchronously, and any child windows (i.e. plugins)
   // asynchronously.
-  void Redraw(const gfx::Rect& invalid_rect);
+  void Redraw();
 
   // Draw the resize corner bitmap on top of the given HDC, if it intersects the
   // given paint rect.
   void DrawResizeCorner(const gfx::Rect& paint_rect, HDC dc);
 
   // Draw our background over the given HDC in the given |rect|. The background
   // will be tiled such that it lines up with existing tiles starting from the
   // origin of |dc|.
   void DrawBackground(const RECT& rect, CPaintDC* dc);
 
@@ skipping 72 matching lines @@
   // until that bug is fixed.
   bool renderer_accessible_;
 
   // The time it took after this view was selected for it to be fully painted.
   base::TimeTicks tab_switch_paint_time_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewWin);
 };
 
 #endif  // CHROME_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_WIN_H_