Splitting the Mus demo code out of a service.

services/ui/demo/bitmap_uploader.h

Index: services/ui/demo/bitmap_uploader.h
diff --git a/services/ui/demo/bitmap_uploader.h b/services/ui/demo/bitmap_uploader.h
index f2418e5e6059d37a120b427c1182ff6775230d8a..c7205e051ac3bd36ba69566e53daaabdb12d5357 100644
--- a/services/ui/demo/bitmap_uploader.h
+++ b/services/ui/demo/bitmap_uploader.h
@@ -12,6 +12,7 @@
 #include "base/compiler_specific.h"
 #include "base/containers/hash_tables.h"
 #include "base/macros.h"
+#include "base/memory/weak_ptr.h"
 #include "cc/output/compositor_frame_sink_client.h"
 #include "gpu/GLES2/gl2chromium.h"
 #include "gpu/GLES2/gl2extchromium.h"
@@ -19,6 +20,10 @@
 #include "services/ui/public/cpp/window_surface.h"
 #include "services/ui/public/cpp/window_surface_client.h"
 
+namespace gpu {
+class GpuChannelHost;
+}
+
 namespace ui {
 class GLES2Context;
 class GpuService;
@@ -50,6 +55,8 @@ class BitmapUploader : public cc::CompositorFrameSinkClient {
  private:
   void Upload();
 
+  void OnGpuChannelEstablished(scoped_refptr<gpu::GpuChannelHost> gpu_channel);
+
   uint32_t BindTextureForSize(const gfx::Size& size);
 
   uint32_t TextureFormat() const {
@@ -83,6 +90,8 @@ class BitmapUploader : public cc::CompositorFrameSinkClient {
   uint32_t next_resource_id_;
   base::hash_map<uint32_t, uint32_t> resource_to_texture_id_map_;
 
+  base::WeakPtrFactory<BitmapUploader> weak_factory_;
+
   DISALLOW_COPY_AND_ASSIGN(BitmapUploader);
 };