gpu: Compositor management of GpuMemoryBuffer instances.

ui/gl/gl_image_shared_memory.h

Index: ui/gl/gl_image_shared_memory.h
diff --git a/ui/gl/gl_image_shared_memory.h b/ui/gl/gl_image_shared_memory.h
index 7de2189eea977aede4bb03478debfcdca6d6e109..429d3c8f259df85df9f16ec16a2855b6db49f00d 100644
--- a/ui/gl/gl_image_shared_memory.h
+++ b/ui/gl/gl_image_shared_memory.h
@@ -15,7 +15,8 @@ class GL_EXPORT GLImageSharedMemory : public GLImageMemory {
  public:
   GLImageSharedMemory(const gfx::Size& size, unsigned internalformat);
 
-  bool Initialize(const gfx::GpuMemoryBufferHandle& handle);
+  bool Initialize(const gfx::GpuMemoryBufferHandle& handle,
+                  gfx::GpuMemoryBuffer::Format format);
 
   // Overridden from GLImage:
   virtual void Destroy(bool have_context) override;