Implement frames() timing function

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

 /*
  * Copyright (C) 2007 Apple Computer, 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 43 matching lines @@
       break;
   }
   return "steps(" + String::Number(steps_) + ", " + step_position_string + ')';
 }
 
 bool CSSStepsTimingFunctionValue::Equals(
     const CSSStepsTimingFunctionValue& other) const {
   return steps_ == other.steps_ && step_position_ == other.step_position_;
 }
 
+String CSSFramesTimingFunctionValue::CustomCSSText() const {
+  return "frames(" + String::Number(frames_) + ")";
+}
+
+bool CSSFramesTimingFunctionValue::Equals(
+    const CSSFramesTimingFunctionValue& other) const {
+  return frames_ == other.frames_;
+}
+
 }  // namespace blink