cc: Use BeginFrameArgs

cc/output/begin_frame_args.cc

 // Copyright (c) 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"
 
 namespace cc {
 
 BeginFrameArgs::BeginFrameArgs() {}
 
 BeginFrameArgs::BeginFrameArgs(base::TimeTicks frame_time,
                                base::TimeTicks deadline,
                                base::TimeDelta interval)
   : frame_time_(frame_time), deadline_(deadline), interval_(interval)
 {}
 
 BeginFrameArgs::~BeginFrameArgs() {}
 
 BeginFrameArgs BeginFrameArgs::CreateBeginFrame(base::TimeTicks frame_time,
                                                 base::TimeTicks deadline,
                                                 base::TimeDelta interval) {
   return BeginFrameArgs(frame_time, deadline, interval);
 }
 
+
+BeginFrameArgs BeginFrameArgs::CreateBeginFrameWithAdjustedDeadline(
+    base::TimeDelta delta) {
+  return BeginFrameArgs(frame_time_, deadline_ + delta, interval_);
+}
+
 BeginFrameArgs BeginFrameArgs::CreateBeginFrameForSynchronousCompositor() {
   // For WebView/SynchronousCompositor, we always want to draw immediately,
   // so we set the deadline to 0 and guess that the interval is 16 milliseconds.
   return BeginFrameArgs(base::TimeTicks::Now(),
                         base::TimeTicks(),
                         base::TimeDelta::FromMicroseconds(16666));
 }
 
 BeginFrameArgs BeginFrameArgs::CreateBeginFrameForTesting() {
   base::TimeTicks now = base::TimeTicks::Now();
   return BeginFrameArgs(now,
                         now + base::TimeDelta::FromMicroseconds(8888),
                         base::TimeDelta::FromMicroseconds(16666));
 }
 
 base::TimeDelta BeginFrameArgs::DefaultDeadlineAdjustment() {
-  return base::TimeDelta::FromMicroseconds(-8888);
+  return base::TimeDelta::FromMicroseconds(-16666/5);
 }
 
 }  // namespace cc