Register surface namespace in BlimpUiContextFactory

ash/mus/stub_context_factory.h

Index: ash/mus/stub_context_factory.h
diff --git a/ash/mus/stub_context_factory.h b/ash/mus/stub_context_factory.h
index 0693f28603ade9b2353e7d9dbaa7f143a46d8ee5..c019594ca7e7806506002e8334c357d984a08030 100644
--- a/ash/mus/stub_context_factory.h
+++ b/ash/mus/stub_context_factory.h
@@ -36,12 +36,14 @@ class StubContextFactory : public ui::ContextFactory {
   cc::SharedBitmapManager* GetSharedBitmapManager() override;
   gpu::GpuMemoryBufferManager* GetGpuMemoryBufferManager() override;
   cc::TaskGraphRunner* GetTaskGraphRunner() override;
+  cc::SurfaceManager* GetSurfaceManager() override;
   scoped_ptr<cc::SurfaceIdAllocator> CreateSurfaceIdAllocator() override;
   void ResizeDisplay(ui::Compositor* compositor,
                      const gfx::Size& size) override;
 
   uint32_t next_surface_id_namespace_;
   scoped_ptr<cc::SingleThreadTaskGraphRunner> task_graph_runner_;
+  scoped_ptr<cc::SurfaceManager> surface_manager_;
 
   DISALLOW_COPY_AND_ASSIGN(StubContextFactory);
 };