Changing animate to beginFrame and use struct rather than naked double to allow extension.

Source/platform/exported/WebActiveGestureAnimation.cpp

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 35 matching lines @@
 }
 
 WebActiveGestureAnimation::WebActiveGestureAnimation(PassOwnPtr<WebGestureCurve> curve, WebGestureCurveTarget* target, double startTime, bool waitingForFirstTick)
     : m_startTime(startTime)
     , m_waitingForFirstTick(waitingForFirstTick)
     , m_curve(curve)
     , m_target(target)
 {
 }
 
-bool WebActiveGestureAnimation::animate(double time)
+bool WebActiveGestureAnimation::animate(WebFrameTime frameTime)
 {
+    double time = frameTime.displayFrameTime;
     if (m_waitingForFirstTick) {
         m_startTime = time;
         m_waitingForFirstTick = false;
     }
     // All WebGestureCurves assume zero-based time, so we subtract
     // the animation start time before passing to the curve.
     return m_curve->apply(time - m_startTime, m_target);

[picksi, 2014/06/24 10:10:26]

As per previous comment this would become:
return m_curve->apply( frameTime.timeElapsedSince(m_StartTime) ... ).

As a knock on we'd no longer need the 'double time' local, instead reading it
directly into m_startTime.

[mithro-old, 2014/07/01 06:04:42]

See previous comment.

 }
 
 } // namespace blink