mus: Use ui::ContextProviderCommandBuffer.

ui/aura/mus/mus_context_factory.h

Index: ui/aura/mus/mus_context_factory.h
diff --git a/ui/aura/mus/mus_context_factory.h b/ui/aura/mus/mus_context_factory.h
index d71a51ae29a6a592fe9e5e36d5284ed7dbb0060b..a8517b990467d1684750684cef839e987cea5a91 100644
--- a/ui/aura/mus/mus_context_factory.h
+++ b/ui/aura/mus/mus_context_factory.h
@@ -14,6 +14,10 @@
 #include "ui/aura/aura_export.h"
 #include "ui/compositor/compositor.h"
 
+namespace gpu {
+class GpuChannelHost;
+}
+
 namespace ui {
 class Gpu;
 }
@@ -27,6 +31,9 @@ class AURA_EXPORT MusContextFactory : public ui::ContextFactory {
   ~MusContextFactory() override;
 
  private:
+  void OnEstablishedGpuChannel(base::WeakPtr<ui::Compositor> compositor,

[msw, 2016/12/19 21:33:33]

optional nit: comment?

[sadrul, 2016/12/20 03:53:20]

Done.

+                               scoped_refptr<gpu::GpuChannelHost> gpu_channel);

[msw, 2016/12/19 21:33:33]

nit: include base/memory/ref_counted.h and base/memory/weak_ptr.h

[sadrul, 2016/12/20 03:53:20]

Done.

+
   // ContextFactory:
   void CreateCompositorFrameSink(
       base::WeakPtr<ui::Compositor> compositor) override;
@@ -42,6 +49,7 @@ class AURA_EXPORT MusContextFactory : public ui::ContextFactory {
 
   ui::RasterThreadHelper raster_thread_helper_;
   ui::Gpu* gpu_;
+  base::WeakPtrFactory<MusContextFactory> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(MusContextFactory);
 };