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

cc/scheduler/begin_frame_source.cc

Index: cc/scheduler/begin_frame_source.cc
diff --git a/cc/scheduler/begin_frame_source.cc b/cc/scheduler/begin_frame_source.cc
index d9cadc83e726f7ceaca6fb32298c279b18c1ccb5..1ee862bf89ba7d5b24c3a55b531336660bcc2c7b 100644
--- a/cc/scheduler/begin_frame_source.cc
+++ b/cc/scheduler/begin_frame_source.cc
@@ -210,12 +210,12 @@ scoped_ptr<SyntheticBeginFrameSource> SyntheticBeginFrameSource::Create(
     base::TimeDelta initial_vsync_interval) {
   scoped_ptr<DelayBasedTimeSource> time_source =
       DelayBasedTimeSource::Create(initial_vsync_interval, task_runner);
-  return make_scoped_ptr(new SyntheticBeginFrameSource(time_source.Pass()));
+  return make_scoped_ptr(new SyntheticBeginFrameSource(std::move(time_source)));
 }
 
 SyntheticBeginFrameSource::SyntheticBeginFrameSource(
     scoped_ptr<DelayBasedTimeSource> time_source)
-    : BeginFrameSourceBase(), time_source_(time_source.Pass()) {
+    : BeginFrameSourceBase(), time_source_(std::move(time_source)) {
   time_source_->SetActive(false);
   time_source_->SetClient(this);
 }