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

chrome/browser/renderer_host/test/test_render_view_host.h

 // Copyright (c) 2009 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_TEST_TEST_RENDER_VIEW_HOST_H_
 #define CHROME_BROWSER_RENDERER_HOST_TEST_TEST_RENDER_VIEW_HOST_H_
 
 #include "base/basictypes.h"
 #include "base/message_loop.h"
 #include "build/build_config.h"
@@ skipping 46 matching lines @@
   virtual void Blur() {}
   virtual bool HasFocus() { return true; }
   virtual void AdvanceFocus(bool reverse) {}
   virtual void Show() { is_showing_ = true; }
   virtual void Hide() { is_showing_ = false; }
   virtual gfx::Rect GetViewBounds() const { return gfx::Rect(); }
   virtual void SetIsLoading(bool is_loading) {}
   virtual void UpdateCursor(const WebCursor& cursor) {}
   virtual void UpdateCursorIfOverSelf() {}
   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() { delete this; }
   virtual void WillDestroyRenderWidget(RenderWidgetHost* rwh) { }
   virtual void Destroy() {}
   virtual void PrepareToDestroy() {}
   virtual void SetTooltipText(const std::wstring& tooltip_text) {}
   virtual BackingStore* AllocBackingStore(const gfx::Size& size);
 #if defined(OS_MACOSX)
   virtual void ShowPopupWithItems(gfx::Rect bounds,
                                   int item_height,
                                   int selected_item,
@@ skipping 176 matching lines @@
   TestRenderViewHostFactory rvh_factory_;
 
   scoped_ptr<TestTabContents> contents_;
 
   scoped_ptr<UserDataManager> user_data_manager_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderViewHostTestHarness);
 };
 
 #endif  // CHROME_BROWSER_RENDERER_HOST_TEST_TEST_RENDER_VIEW_HOST_H_