Fix missing backing store in Linux.

chrome/browser/tab_contents/web_contents_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_TAB_CONTENTS_WEB_CONTENTS_VIEW_WIN_H_
 #define CHROME_BROWSER_TAB_CONTENTS_WEB_CONTENTS_VIEW_WIN_H_
 
 #include "base/gfx/size.h"
 #include "base/scoped_ptr.h"
 #include "chrome/browser/tab_contents/web_contents_view.h"
@@ skipping 24 matching lines @@
   virtual gfx::NativeView GetContentNativeView() const;
   virtual gfx::NativeWindow GetTopLevelNativeWindow() const;
   virtual void GetContainerBounds(gfx::Rect* out) const;
   virtual void OnContentsDestroy();
   virtual void SetPageTitle(const std::wstring& title);
   virtual void Invalidate();
   virtual void SizeContents(const gfx::Size& size);
   virtual void SetInitialFocus();
   virtual void StoreFocus();
   virtual void RestoreFocus();
+  virtual void SetChildSize(RenderWidgetHostView* rwh_view);
 
   // Backend implementation of RenderViewHostDelegate::View.
   virtual void ShowContextMenu(const ContextMenuParams& params);
   virtual void StartDragging(const WebDropData& drop_data);
   virtual void UpdateDragCursor(bool is_drop_target);
   virtual void TakeFocus(bool reverse);
   virtual void HandleKeyboardEvent(const NativeWebKeyboardEvent& event);
 
  private:
   // Windows events ------------------------------------------------------------
@@ skipping 42 matching lines @@
   // Whether to ignore the next CHAR keyboard event.
   bool ignore_next_char_event_;
 
   // The id used in the ViewStorage to store the last focused view.
   int last_focused_view_storage_id_;
 
   DISALLOW_COPY_AND_ASSIGN(WebContentsViewWin);
 };
 
 #endif  // CHROME_BROWSER_TAB_CONTENTS_WEB_CONTENTS_VIEW_WIN_H_