Convert //cc from scoped_ptr to std::unique_ptr.

cc/layers/video_layer_impl.h

Index: cc/layers/video_layer_impl.h
diff --git a/cc/layers/video_layer_impl.h b/cc/layers/video_layer_impl.h
index 6db19302c2a901bfb48de8babb814a041cdfbede..4a2480acdf26a540c308288486a97a2274b288e5 100644
--- a/cc/layers/video_layer_impl.h
+++ b/cc/layers/video_layer_impl.h
@@ -26,14 +26,15 @@ class CC_EXPORT VideoLayerImpl : public LayerImpl {
  public:
   // Must be called on the impl thread while the main thread is blocked. This is
   // so that |provider| stays alive while this is being created.
-  static scoped_ptr<VideoLayerImpl> Create(LayerTreeImpl* tree_impl,
-                                           int id,
-                                           VideoFrameProvider* provider,
-                                           media::VideoRotation video_rotation);
+  static std::unique_ptr<VideoLayerImpl> Create(
+      LayerTreeImpl* tree_impl,
+      int id,
+      VideoFrameProvider* provider,
+      media::VideoRotation video_rotation);
   ~VideoLayerImpl() override;
 
   // LayerImpl implementation.
-  scoped_ptr<LayerImpl> CreateLayerImpl(LayerTreeImpl* tree_impl) override;
+  std::unique_ptr<LayerImpl> CreateLayerImpl(LayerTreeImpl* tree_impl) override;
   bool WillDraw(DrawMode draw_mode,
                 ResourceProvider* resource_provider) override;
   void AppendQuads(RenderPass* render_pass,
@@ -61,7 +62,7 @@ class CC_EXPORT VideoLayerImpl : public LayerImpl {
 
   media::VideoRotation video_rotation_;
 
-  scoped_ptr<VideoResourceUpdater> updater_;
+  std::unique_ptr<VideoResourceUpdater> updater_;
   VideoFrameExternalResources::ResourceType frame_resource_type_;
   float frame_resource_offset_;
   float frame_resource_multiplier_;