make BeginFrameSourceMixIn's SetNeedsBeginFrame final

cc/scheduler/begin_frame_source.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/scheduler/begin_frame_source.h"
 
 #include "base/auto_reset.h"
 #include "base/debug/trace_event.h"
 #include "base/debug/trace_event_argument.h"
 #include "base/location.h"
@@ skipping 396 matching lines @@
 
 // BeginFrameSource support
 bool BeginFrameSourceMultiplexer::NeedsBeginFrames() const {
   if (active_source_) {
     return active_source_->NeedsBeginFrames();
   } else {
     return false;
   }
 }
 
-void BeginFrameSourceMultiplexer::SetNeedsBeginFrames(bool needs_begin_frames) {
+void BeginFrameSourceMultiplexer::OnNeedsBeginFramesChange(
+    bool needs_begin_frames) {
   DEBUG_FRAMES("BeginFrameSourceMultiplexer::SetNeedsBeginFrames",

[simonhong, 2015/02/03 19:37:55]

SetNeedsBeginFrames -> OnNeedsBeginFramesChange.

[Jimmy Jo, 2015/02/04 01:46:47]

Done.

                "active_source",
                active_source_,
                "needs_begin_frames",
                needs_begin_frames);
   if (active_source_) {
     active_source_->SetNeedsBeginFrames(needs_begin_frames);
   } else {
     DCHECK(!needs_begin_frames);
   }
 }
@@ skipping 54 matching lines @@
   if (!observer_->LastUsedBeginFrameArgs().IsValid())
     return true;
 
   // Only allow new args have a *strictly bigger* frame_time value and statisfy
   // minimum interval requirement.
   return (args.frame_time >=
           observer_->LastUsedBeginFrameArgs().frame_time + minimum_interval_);
 }
 
 }  // namespace cc