Implement frames() timing function

third_party/WebKit/Source/core/css/CSSTimingFunctionValue.h

Index: third_party/WebKit/Source/core/css/CSSTimingFunctionValue.h
diff --git a/third_party/WebKit/Source/core/css/CSSTimingFunctionValue.h b/third_party/WebKit/Source/core/css/CSSTimingFunctionValue.h
index 3eaa55aa5feae35884bc777d50277c237f7389fa..155dbe0c7c54b3439fab1abe80eb7fde29c39f0d 100644
--- a/third_party/WebKit/Source/core/css/CSSTimingFunctionValue.h
+++ b/third_party/WebKit/Source/core/css/CSSTimingFunctionValue.h
@@ -106,6 +106,32 @@ class CSSStepsTimingFunctionValue : public CSSValue {
 DEFINE_CSS_VALUE_TYPE_CASTS(CSSStepsTimingFunctionValue,
                             IsStepsTimingFunctionValue());
 
+class CSSFramesTimingFunctionValue : public CSSValue {
+ public:
+  static CSSFramesTimingFunctionValue* Create(int frames) {
+    return new CSSFramesTimingFunctionValue(frames);
+  }
+
+  int NumberOfFrames() const { return frames_; }
+
+  String CustomCSSText() const;
+
+  bool Equals(const CSSFramesTimingFunctionValue&) const;
+
+  DEFINE_INLINE_TRACE_AFTER_DISPATCH() {
+    CSSValue::TraceAfterDispatch(visitor);
+  }
+
+ private:
+  CSSFramesTimingFunctionValue(int frames)
+      : CSSValue(kFramesTimingFunctionClass), frames_(frames) {}
+
+  int frames_;
+};
+
+DEFINE_CSS_VALUE_TYPE_CASTS(CSSFramesTimingFunctionValue,
+                            IsFramesTimingFunctionValue());
+
 }  // namespace blink
 
 #endif