Change SkTime::GetMSecs to double; ensure values stored in SkMSec do not overflow.

include/animator/SkAnimator.h

 
 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #ifndef SkAnimator_DEFINED
@@ skipping 425 matching lines @@
     */
     class Timeline {
     public:
         virtual ~Timeline() {}
 
         /** Returns the current time in milliseconds */
         virtual SkMSec getMSecs() const = 0;
     };
 
     /** Sets a user class to return the current time to the animator.
-        Optional; if not called, the system clock will be used by calling SkTime::GetMSecs instead.
+        Optional; if not called, the system clock will be used by calling
+        SkEvent::GetMSecsSinceStartup instead.
         @param callBack the time function
     */
     void setTimeline(const Timeline& );
 
     static void Init(bool runUnitTests);
     static void Term();
 
     /** The event sink events generated by the animation are posted to.
         Screenplay also posts an inval event to this event sink after processing an
         event to force a redraw.
@@ skipping 34 matching lines @@
     friend class SkAnimatorScript;
     friend class SkAnimatorScript2;
     friend class SkApply;
     friend class SkDisplayMovie;
     friend class SkDisplayType;
     friend class SkPost;
     friend class SkXMLAnimatorWriter;
 };
 
 #endif