cc: Replace Pass() with std::move() in some subdirs.

cc/layers/video_layer.cc

Index: cc/layers/video_layer.cc
diff --git a/cc/layers/video_layer.cc b/cc/layers/video_layer.cc
index cae00aacf1d02f0631d2ef09f2c6984c20111a38..49d6490d7d1db73de39a70047f901f344a81aa2f 100644
--- a/cc/layers/video_layer.cc
+++ b/cc/layers/video_layer.cc
@@ -25,9 +25,7 @@ VideoLayer::VideoLayer(const LayerSettings& settings,
 VideoLayer::~VideoLayer() {}
 
 scoped_ptr<LayerImpl> VideoLayer::CreateLayerImpl(LayerTreeImpl* tree_impl) {
-  scoped_ptr<VideoLayerImpl> impl =
-      VideoLayerImpl::Create(tree_impl, id(), provider_, video_rotation_);
-  return impl.Pass();
+  return VideoLayerImpl::Create(tree_impl, id(), provider_, video_rotation_);
 }
 
 bool VideoLayer::Update() {