1 files changed, 7 insertions, 2 deletions
diff --git a/WebCore/page/animation/AnimationBase.h b/WebCore/page/animation/AnimationBase.h
index 3482f65..c367e0a 100644
--- a/WebCore/page/animation/AnimationBase.h
+++ b/WebCore/page/animation/AnimationBase.h
@@ -186,8 +186,13 @@ protected:
     virtual void onAnimationStart(double /*elapsedTime*/) { }
     virtual void onAnimationIteration(double /*elapsedTime*/) { }
     virtual void onAnimationEnd(double /*elapsedTime*/) { }
-    virtual bool startAnimation(double /*beginTime*/) { return false; }
-    virtual void endAnimation(bool /*reset*/) { }
+    
+    // timeOffset is an offset from the current time when the animation should start. Negative values are OK.
+    // Return value indicates whether to expect an asynchronous notifyAnimationStarted() callback.
+    virtual bool startAnimation(double /*timeOffset*/) { return false; }
+    // timeOffset is the time at which the animation is being paused.
+    virtual void pauseAnimation(double /*timeOffset*/) { }
+    virtual void endAnimation() { }
 
     void goIntoEndingOrLoopingState();