Make the web-animations engine use the passed in blink::WebFrameTime values.

Source/core/animation/AnimationClock.h

 /*
  * Copyright (C) 2013 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 13 matching lines @@
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef AnimationClock_h
 #define AnimationClock_h
 
-#include "wtf/CurrentTime.h"
+#include "public/platform/WebFrameTime.h"
 #include "wtf/Noncopyable.h"
 #include "wtf/PassOwnPtr.h"
 #include <limits>
 
 namespace WebCore {
 
 class AnimationClock {
     WTF_MAKE_NONCOPYABLE(AnimationClock);
 public:
-    explicit AnimationClock(WTF::TimeFunction monotonicallyIncreasingTime = WTF::monotonicallyIncreasingTime)
-        : m_monotonicallyIncreasingTime(monotonicallyIncreasingTime)
-        , m_time(0)
+    explicit AnimationClock()
+        : m_frameTime()
         , m_currentTask(std::numeric_limits<unsigned>::max())
-    {
-    }
+    { }
 
-    void updateTime(double time);
+    void updateTime(blink::WebFrameTime);
     double currentTime();
-    void resetTimeForTesting();
-
     static void notifyTaskStart() { ++s_currentTask; }
 
+    void resetTimeForTesting();
+    void tickTimeForTesting();
+    void clearTimeForTesting();
+
 private:
-    WTF::TimeFunction m_monotonicallyIncreasingTime;
-    double m_time;
+    double internalCurrentTime();
+
+    blink::WebFrameTime m_frameTime;
     unsigned m_currentTask;
     static unsigned s_currentTask;
 };
 
 } // namespace WebCore
 
 #endif // AnimationClock_h