ozone: Implement zero/one-copy texture for Ozone GBM.

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
index 882e1e04235a443c01bfe69991a63ecec64fafe8..cd70070a126723ac830242b30bbbe7e5a5e052fe 100644
--- 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
@@ -7,6 +7,12 @@
 
 #include "content/common/gpu/client/gpu_memory_buffer_impl.h"
 
+namespace ui {
+
+class NativePixmap;
+
+}  // namespace ui
+
 namespace content {
 
 // Implementation of GPU memory buffer based on Ozone native buffers.
@@ -19,6 +25,8 @@ class GpuMemoryBufferImplOzoneNativeBuffer : public GpuMemoryBufferImpl {
       Usage usage,
       const DestructionCallback& callback);
 
+  ~GpuMemoryBufferImplOzoneNativeBuffer() override;
+
   // Overridden from gfx::GpuMemoryBuffer:
   bool Map(void** data) override;
   void Unmap() override;
@@ -29,8 +37,13 @@ class GpuMemoryBufferImplOzoneNativeBuffer : public GpuMemoryBufferImpl {
   GpuMemoryBufferImplOzoneNativeBuffer(gfx::GpuMemoryBufferId id,
                                        const gfx::Size& size,
                                        Format format,
+                                       Usage usage,
                                        const DestructionCallback& callback);
-  ~GpuMemoryBufferImplOzoneNativeBuffer() override;
+
+  bool Initialize(const gfx::GpuMemoryBufferHandle& handle);
+
+  scoped_refptr<ui::NativePixmap> pixmap_;
+  Usage usage_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuMemoryBufferImplOzoneNativeBuffer);
 };