Revert of cc: Make scheduling be driven by vsync for android webview.

cc/output/begin_frame_args.cc

 // Copyright 2013 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/output/begin_frame_args.h"
 
 #include "base/trace_event/trace_event_argument.h"
 #include "ui/gfx/frame_time.h"
 
 namespace cc {
 
 const char* BeginFrameArgs::TypeToString(BeginFrameArgsType type) {
   switch (type) {
     case BeginFrameArgs::INVALID:
       return "INVALID";
     case BeginFrameArgs::NORMAL:
       return "NORMAL";
+    case BeginFrameArgs::SYNCHRONOUS:
+      return "SYNCHRONOUS";
     case BeginFrameArgs::MISSED:
       return "MISSED";
     case BeginFrameArgs::BEGIN_FRAME_ARGS_TYPE_MAX:
       return "BEGIN_FRAME_ARGS_TYPE_MAX";
   }
   NOTREACHED();
   return "???";
 }
 
 BeginFrameArgs::BeginFrameArgs()
@@ skipping 56 matching lines @@
 // output.
 base::TimeDelta BeginFrameArgs::DefaultEstimatedParentDrawTime() {
   return base::TimeDelta::FromMicroseconds(16666 / 3);
 }
 
 base::TimeDelta BeginFrameArgs::DefaultInterval() {
   return base::TimeDelta::FromMicroseconds(16666);
 }
 
 }  // namespace cc