Add shared bitmap managers for browser and renderer processes.

content/child/child_shared_bitmap_manager.h

Index: content/child/child_shared_bitmap_manager.h
diff --git a/content/child/child_shared_bitmap_manager.h b/content/child/child_shared_bitmap_manager.h
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+// Copyright (c) 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 CONTENT_CHILD_CHILD_SHARED_BITMAP_MANAGER_H_
+#define CONTENT_CHILD_CHILD_SHARED_BITMAP_MANAGER_H_
+
+#include "base/memory/ref_counted.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/memory/shared_memory.h"
+#include "cc/resources/shared_bitmap_manager.h"
+#include "content/child/thread_safe_sender.h"
+
+namespace content {
+
+class ChildSharedBitmapManager : public cc::SharedBitmapManager {
+ public:
+  ChildSharedBitmapManager(scoped_refptr<ThreadSafeSender> sender);
+  virtual ~ChildSharedBitmapManager();
+
+  virtual scoped_ptr<cc::SharedBitmap> AllocateSharedBitmap(
+      const gfx::Size& size) OVERRIDE;
+  virtual scoped_ptr<cc::SharedBitmap> GetSharedBitmapFromId(
+      const gfx::Size&,
+      const cc::SharedBitmapId&) OVERRIDE;
+  virtual scoped_ptr<cc::SharedBitmap> GetBitmapForSharedMemory(
+      base::SharedMemory* mem) OVERRIDE;
+
+ private:
+  void FreeSharedMemory(cc::SharedBitmap* bitmap);
+  void ReleaseSharedBitmap(cc::SharedBitmap*);
+
+  scoped_refptr<ThreadSafeSender> sender_;
+
+  DISALLOW_COPY_AND_ASSIGN(ChildSharedBitmapManager);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_CHILD_CHILD_SHARED_BITMAP_MANAGER_H_