Remove BackingStoreGtk::CairoShowRect().

content/browser/renderer_host/backing_store_gtk.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_BROWSER_RENDERER_HOST_BACKING_STORE_GTK_H_
 #define CONTENT_BROWSER_RENDERER_HOST_BACKING_STORE_GTK_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 31 matching lines @@
   Display* display() const { return display_; }
   XID root_window() const { return root_window_; }
 
   // Copy from the server-side backing store to the target window
   //   origin: the destination rectangle origin
   //   damage: the area to copy
   //   target: the X id of the target window
   void XShowRect(const gfx::Point &origin, const gfx::Rect& damage,
                  XID target);
 
-  // As above, but use Cairo instead of Xlib.
-  void CairoShowRect(const gfx::Rect& damage, GdkDrawable* drawable);
-
 #if defined(TOOLKIT_GTK)
   // Paint the backing store into the target's |dest_rect|.
   void PaintToRect(const gfx::Rect& dest_rect, GdkDrawable* target);
 #endif
 
   // BackingStore implementation.
   virtual size_t MemorySize() OVERRIDE;
   virtual void PaintToBackingStore(
       RenderProcessHost* process,
       TransportDIB::Id bitmap,
@@ skipping 36 matching lines @@
   XID picture_;
   // This is a default graphic context, used in XCopyArea
   void* pixmap_gc_;
 
   DISALLOW_COPY_AND_ASSIGN(BackingStoreGtk);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_BACKING_STORE_GTK_H_