gpu: Compositor management of GpuMemoryBuffer instances.

mojo/aura/surface_context_factory.cc

Index: mojo/aura/surface_context_factory.cc
diff --git a/mojo/aura/surface_context_factory.cc b/mojo/aura/surface_context_factory.cc
index 1e560296731af6f7b9e861cc2fdaef4761446484..686a5611aa65229acb0e1efdc5d00579c4e440e6 100644
--- a/mojo/aura/surface_context_factory.cc
+++ b/mojo/aura/surface_context_factory.cc
@@ -51,6 +51,10 @@ cc::SharedBitmapManager* SurfaceContextFactory::GetSharedBitmapManager() {
   return nullptr;
 }
 
+cc::GpuMemoryBufferManager* SurfaceContextFactory::GetGpuMemoryBufferManager() {
+  return nullptr;
+}
+
 base::MessageLoopProxy* SurfaceContextFactory::GetCompositorMessageLoop() {
   return nullptr;
 }