Add tracing for GL texture objects

cc/resources/shared_bitmap.h

 // Copyright 2013 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_RESOURCES_SHARED_BITMAP_H_
 #define CC_RESOURCES_SHARED_BITMAP_H_
 
 #include "base/basictypes.h"
+#include "base/trace_event/memory_allocator_dump.h"
 #include "cc/base/cc_export.h"
 #include "gpu/command_buffer/common/mailbox.h"
 #include "ui/gfx/geometry/size.h"
 
 namespace cc {
 typedef gpu::Mailbox SharedBitmapId;
 
+CC_EXPORT base::trace_event::MemoryAllocatorDumpGuid
+GetSharedBitmapGUIDForTracing(const SharedBitmapId& bitmap_id);
+
 class CC_EXPORT SharedBitmap {
  public:
   SharedBitmap(uint8* pixels, const SharedBitmapId& id);
 
   virtual ~SharedBitmap();
 
   uint8* pixels() { return pixels_; }
 
   const SharedBitmapId& id() { return id_; }
 
@@ skipping 13 matching lines @@
  private:
   uint8* pixels_;
   SharedBitmapId id_;
 
   DISALLOW_COPY_AND_ASSIGN(SharedBitmap);
 };
 
 }  // namespace cc
 
 #endif  // CC_RESOURCES_SHARED_BITMAP_H_