Replacing allocate bitmap IPC messages with a new Mojo interface.

content/browser/renderer_host/shared_memory_allocator_impl.h

+// Copyright 2016 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_RENDER_HOST_SHARED_MEMORY_ALLOCATOR_H_
+#define CONTENT_BROWSER_RENDER_HOST_SHARED_MEMORY_ALLOCATOR_H_
+
+#include "base/macros.h"
+#include "base/memory/shared_memory.h"
+#include "content/common/host_shared_bitmap_manager.h"
+#include "content/common/shared_memory_allocator.mojom.h"
+#include "mojo/public/cpp/bindings/interface_request.h"
+
+namespace content {
+
+class SharedMemoryAllocatorImpl : public mojom::SharedMemoryAllocator {
+ public:
+  static void Create(mojom::SharedMemoryAllocatorRequest request);
+
+  ~SharedMemoryAllocatorImpl() override;
+
+ private:
+  SharedMemoryAllocatorImpl();
+
+  // mojom::SharedMemoryAllocator implementation:
+  void AllocatedSharedBitmap(mojo::ScopedSharedBufferHandle buffer,
+                             const gpu::Mailbox& id) override;
+  void DeletedSharedBitmap(const gpu::Mailbox& id) override;
+
+  HostSharedBitmapManagerClient bitmap_manager_client_;
+  base::ThreadChecker thread_checker_;
+
+  DISALLOW_COPY_AND_ASSIGN(SharedMemoryAllocatorImpl);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_RENDER_HOST_SHARED_MEMORY_ALLOCATOR_H_