ui: Add Linux dma-buf implementation of GLImage.

ui/gl/gl_image_linux_dma_buffer.h

+// 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 UI_GL_GL_IMAGE_LINUX_DMA_BUFFER_H_
+#define UI_GL_GL_IMAGE_LINUX_DMA_BUFFER_H_
+
+#include "ui/gfx/gpu_memory_buffer.h"
+#include "ui/gl/gl_image_egl.h"
+
+namespace gfx {
+
+class GL_EXPORT GLImageLinuxDMABuffer : public GLImageEGL {
+ public:
+  GLImageLinuxDMABuffer(const gfx::Size& size, unsigned internalformat);
+
+  // Returns true on success and the file descriptor can be closed as the
+  // implementation will take a reference to the dma_buf.
+  bool Initialize(const base::FileDescriptor& handle,
+                  gfx::GpuMemoryBuffer::Format format,
+                  int pitch);
+
+ protected:
+  virtual ~GLImageLinuxDMABuffer();
+
+ private:
+  unsigned internalformat_;
+
+  DISALLOW_COPY_AND_ASSIGN(GLImageLinuxDMABuffer);
+};
+
+}  // namespace gfx
+
+#endif  // UI_GL_GL_IMAGE_LINUX_DMA_BUFFER_H_