cc: Remove retro frames from scheduler.

cc/scheduler/begin_frame_tracker.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_tracker.h"
 
 namespace cc {
 
 BeginFrameTracker::BeginFrameTracker(const tracked_objects::Location& location)
     : location_(location),
@@ skipping 94 matching lines @@
                    (deadline - frame_time).InMillisecondsF());
   state->SetDouble("4_now", (now - base::TimeTicks()).InMillisecondsF());
   state->SetDouble("5_frame_time",
                    (frame_time - base::TimeTicks()).InMillisecondsF());
   state->SetDouble("6_deadline",
                    (deadline - base::TimeTicks()).InMillisecondsF());
   state->EndDictionary();
 }
 
 const BeginFrameArgs& BeginFrameTracker::DangerousMethodCurrentOrLast() const {
-  if (!HasFinished()) {
-    return Current();
-  } else {
-    return Last();
-  }
+  return current_args_;
 }
 
 }  // namespace cc