Add use counters for function values of easing

third_party/WebKit/Source/core/animation/TimingInput.h

Index: third_party/WebKit/Source/core/animation/TimingInput.h
diff --git a/third_party/WebKit/Source/core/animation/TimingInput.h b/third_party/WebKit/Source/core/animation/TimingInput.h
index 48f5ed74b18733e777cac2f0c94d0e10457d6863..073f180d3094aabcd0284d4b4b613f9e6434848f 100644
--- a/third_party/WebKit/Source/core/animation/TimingInput.h
+++ b/third_party/WebKit/Source/core/animation/TimingInput.h
@@ -12,12 +12,13 @@
 namespace blink {
 
 class Dictionary;
+class Document;
 class KeyframeEffectOptions;
 
 class CORE_EXPORT TimingInput {
     STATIC_ONLY(TimingInput);
 public:
-    static Timing convert(const KeyframeEffectOptions& timingInput);
+    static Timing convert(const KeyframeEffectOptions& timingInput, Document*);
     static Timing convert(double duration);
 
     static void setStartDelay(Timing&, double startDelay);
@@ -28,7 +29,7 @@ public:
     static void setIterationDuration(Timing&, double iterationDuration);
     static void setPlaybackRate(Timing&, double playbackRate);
     static void setPlaybackDirection(Timing&, const String& direction);
-    static void setTimingFunction(Timing&, const String& timingFunctionString);
+    static void setTimingFunction(Timing&, const String& timingFunctionString, Document*);
 };
 
 } // namespace blink