Browser side OZONE_NATIVE_BUFFER allocation

content/common/gpu/client/gpu_memory_buffer_impl_ozone_native_buffer.h

Index: content/common/gpu/client/gpu_memory_buffer_impl_ozone_native_buffer.h
diff --git a/content/common/gpu/client/gpu_memory_buffer_impl_ozone_native_buffer.h b/content/common/gpu/client/gpu_memory_buffer_impl_ozone_native_buffer.h
new file mode 100644
index 0000000000000000000000000000000000000000..2e0413b817fd8eb23bcf9536e06d168d96cdc421
--- /dev/null
+++ b/content/common/gpu/client/gpu_memory_buffer_impl_ozone_native_buffer.h
@@ -0,0 +1,52 @@
+// Copyright 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_IMPL_OZONE_H_
+#define CONTENT_COMMON_GPU_CLIENT_GPU_MEMORY_BUFFER_IMPL_OZONE_H_
+
+#include "content/common/gpu/client/gpu_memory_buffer_impl.h"
+
+namespace content {
+
+// Implementation of GPU memory buffer based on Ozone native buffers.
+class GpuMemoryBufferImplOzoneNativeBuffer : public GpuMemoryBufferImpl {
+ public:
+  GpuMemoryBufferImplOzoneNativeBuffer(const gfx::Size& size,
+                                       unsigned internalformat);
+  virtual ~GpuMemoryBufferImplOzoneNativeBuffer();
+
+  // Allocates an Ozone native buffer acked GPU memory buffer with |size| and
+  // |internalformat| with usage |usage| for use by |child_id|.

[reveman, 2014/08/13 17:00:26]

nit: s/acked/backed/ and maybe "for |usage| by child process identified by
|child_id|"

+  static void AllocateOzoneNativeBufferForChildId(
+      const gfx::Size& size,
+      unsigned internalformat,
+      unsigned usage,
+      int child_id,
+      const AllocationCallback& callback);
+
+  static bool IsFormatSupported(unsigned internalformat);
+  static bool IsUsageSupported(unsigned usage);
+  static bool IsConfigurationSupported(unsigned internalformat, unsigned usage);
+
+  bool InitializeFromHandle(const gfx::GpuMemoryBufferHandle& handle);
+
+  // Overridden from gfx::GpuMemoryBuffer:
+  virtual void* Map() OVERRIDE;
+  virtual void Unmap() OVERRIDE;
+  virtual uint32 GetStride() const OVERRIDE;
+  virtual gfx::GpuMemoryBufferHandle GetHandle() const OVERRIDE;
+
+ private:
+  static void OnGpuMemoryBufferCreated(
+      const AllocationCallback& callback,
+      const gfx::GpuMemoryBufferHandle& handle);
+
+  gfx::GpuMemoryBufferId id_;
+
+  DISALLOW_COPY_AND_ASSIGN(GpuMemoryBufferImplOzoneNativeBuffer);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_COMMON_GPU_CLIENT_GPU_MEMORY_BUFFER_IMPL_OZONE_H_