Mac CoreAnimation compositor in the browser process

ui/gfx/gpu_memory_buffer.h

Index: ui/gfx/gpu_memory_buffer.h
diff --git a/ui/gfx/gpu_memory_buffer.h b/ui/gfx/gpu_memory_buffer.h
index 423dcf617e78c6f142296a52e1c534ade9cad29e..288f8e77717d18fdf730f21433e747d96958f903 100644
--- a/ui/gfx/gpu_memory_buffer.h
+++ b/ui/gfx/gpu_memory_buffer.h
@@ -65,6 +65,8 @@ class GFX_EXPORT GpuMemoryBuffer {
  public:
   virtual ~GpuMemoryBuffer() {}
 
+  virtual void* GetIOSurface() = 0;
+
   // Maps each plane of the buffer into the client's address space so it can be
   // written to by the CPU. This call may block, for instance if the GPU needs
   // to finish accessing the buffer or if CPU caches need to be synchronized.