Pass a sequence number along with the DIB handle when compositing in software.

cc/output/software_output_device.h

 // Copyright 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 CC_OUTPUT_SOFTWARE_OUTPUT_DEVICE_H_
 #define CC_OUTPUT_SOFTWARE_OUTPUT_DEVICE_H_
 
 #include "base/basictypes.h"
 #include "cc/base/cc_export.h"
 #include "skia/ext/refptr.h"
@@ skipping 21 matching lines @@
   virtual void Resize(gfx::Size size);
 
   virtual SkCanvas* BeginPaint(gfx::Rect damage_rect);
   virtual void EndPaint(SoftwareFrameData* frame_data);
 
   virtual void CopyToBitmap(gfx::Rect rect, SkBitmap* output);
   virtual void Scroll(gfx::Vector2d delta,
                       gfx::Rect clip_rect);
 
   // TODO(skaslev) Remove this after UberCompositor lands.
-  virtual void ReclaimDIB(TransportDIB::Handle handle);
+  virtual void ReclaimDIB(const TransportDIB::Id& id);
 
  protected:
   gfx::Size viewport_size_;
   gfx::Rect damage_rect_;
   skia::RefPtr<SkDevice> device_;
   skia::RefPtr<SkCanvas> canvas_;
 
   DISALLOW_COPY_AND_ASSIGN(SoftwareOutputDevice);
 };
 
 }  // namespace cc
 
 #endif  // CC_OUTPUT_SOFTWARE_OUTPUT_DEVICE_H_