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 408b5fb3b3c567558fd37a64f3d559f678721186..a0af8021595a8ad1380f765791140f4ac575b63a 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 m_frames; }
+
+  String customCSSText() const;
+
+  bool equals(const CSSFramesTimingFunctionValue&) const;
+
+  DEFINE_INLINE_TRACE_AFTER_DISPATCH() {
+    CSSValue::traceAfterDispatch(visitor);
+  }
+
+ private:
+  CSSFramesTimingFunctionValue(int frames)
+      : CSSValue(FramesTimingFunctionClass), m_frames(frames) {}
+
+  int m_frames;
+};
+
+DEFINE_CSS_VALUE_TYPE_CASTS(CSSFramesTimingFunctionValue,
+                            isFramesTimingFunctionValue());
+
 }  // namespace blink
 
 #endif