Plumb GpuMemoryBuffer allocation to GPU process.

content/common/gpu/client/gpu_memory_buffer_factory_host.h

+// Copyright (c) 2014 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_COMMON_GPU_CLIENT_GPU_MEMORY_BUFFER_FACTORY_HOST_H_
+#define CONTENT_COMMON_GPU_CLIENT_GPU_MEMORY_BUFFER_FACTORY_HOST_H_
+
+namespace gfx {
+struct GpuMemoryBufferHandle;
+}
+
+namespace content {
+
+class GpuMemoryBufferFactoryHost {

[reveman, 2014/06/09 14:35:21]

We'll need static Set/GetInstance functions for GpuMemoryBufferImpls to access
this but you can leave that to a follow up patch if you like.

+ public:
+  typedef base::Callback<void(const gfx::GpuMemoryBufferHandle& handle)>
+      CreateGpuMemoryBufferCallback;
+
+  virtual void CreateGpuMemoryBuffer(
+      const gfx::GpuMemoryBufferHandle& handle,
+      size_t width,
+      size_t height,
+      unsigned internalformat,
+      unsigned usage,
+      const CreateGpuMemoryBufferCallback& callback) = 0;
+  virtual void DestroyGpuMemoryBuffer(const gfx::GpuMemoryBufferHandle& handle,
+                                      int32 sync_point) = 0;
+
+ protected:
+  virtual ~GpuMemoryBufferFactoryHost() {}
+};
+
+}  // namespace content
+
+#endif  // CONTENT_COMMON_GPU_CLIENT_GPU_MEMORY_BUFFER_FACTORY_HOST_H_