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..42bb7310c08297c510ca18c1a1bba9421b0ef20c 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
@@ -6,6 +6,7 @@
 #define CONTENT_COMMON_GPU_CLIENT_GPU_MEMORY_BUFFER_IMPL_OZONE_NATIVE_BUFFER_H_
 
 #include "content/common/gpu/client/gpu_memory_buffer_impl.h"
+#include "ui/ozone/public/native_pixmap_manager.h"
 
 namespace content {
 
@@ -13,12 +14,15 @@ namespace content {
 class GpuMemoryBufferImplOzoneNativeBuffer : public GpuMemoryBufferImpl {

[reveman, 2015/06/25 14:07:51]

There's now both OzoneNativeBuffer and NativePixmap and they both refer to the
same thing, afaict. Can we just use one name instead?
GpuMemoryBufferFactoryOzoneNativeBuffer, GpuMemoryBufferImplOzoneNativeBuffer,
OzoneNativeBufferManager, etc.

[dshwang, 2015/06/25 14:52:13]

I think GpuMemoryBufferFactoryOzoneNativeBuffer and
GpuMemoryBufferImplOzoneNativeBuffer should be renamed to
GpuMemoryBufferFactoryOzone and GpuMemoryBufferImplOzone. Those are just ozone
implementation of GpuMemoryBufferFactory and GpuMemoryBufferImpl.
OzoneNativeBuffer term is redundant.
After that, we have only NativePixmap term, which is ozone term for native
buffer like SurfaceTexture and IOSurface.
WDYT? If you are ok, I'll submit prerequisite renaming patch in another CL

  public:
   static scoped_ptr<GpuMemoryBufferImpl> CreateFromHandle(
+      ui::NativePixmapManager* manager,
       const gfx::GpuMemoryBufferHandle& handle,
       const gfx::Size& size,
       Format format,
       Usage usage,
       const DestructionCallback& callback);
 
+  ~GpuMemoryBufferImplOzoneNativeBuffer() override;
+
   // Overridden from gfx::GpuMemoryBuffer:
   bool Map(void** data) override;
   void Unmap() override;
@@ -29,8 +33,14 @@ class GpuMemoryBufferImplOzoneNativeBuffer : public GpuMemoryBufferImpl {
   GpuMemoryBufferImplOzoneNativeBuffer(gfx::GpuMemoryBufferId id,
                                        const gfx::Size& size,
                                        Format format,
+                                       Usage usage,
                                        const DestructionCallback& callback);
-  ~GpuMemoryBufferImplOzoneNativeBuffer() override;
+
+  bool Initialize(ui::NativePixmapManager* manager,
+                  const gfx::GpuMemoryBufferHandle& handle);
+
+  scoped_refptr<ui::NativePixmap> pixmap_;
+  Usage usage_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuMemoryBufferImplOzoneNativeBuffer);
 };