Implement frames() timing function

third_party/WebKit/Source/core/css/resolver/CSSToStyleMap.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 2004-2005 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2006, 2007 Nicholas Shanks (webkit@nickshanks.com)
  * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All
  * rights reserved.
  * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
  * Copyright (C) 2007, 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved.
  * (http://www.torchmobile.com/)
@@ skipping 440 matching lines @@
     const CSSCubicBezierTimingFunctionValue& cubicTimingFunction =
         toCSSCubicBezierTimingFunctionValue(value);
     return CubicBezierTimingFunction::create(
         cubicTimingFunction.x1(), cubicTimingFunction.y1(),
         cubicTimingFunction.x2(), cubicTimingFunction.y2());
   }
 
   if (value.isInitialValue())
     return CSSTimingData::initialTimingFunction();
 
+  if (value.isFramesTimingFunctionValue()) {
+    const CSSFramesTimingFunctionValue& framesTimingFunction =
+        toCSSFramesTimingFunctionValue(value);
+    return FramesTimingFunction::create(framesTimingFunction.numberOfFrames());
+  }
+
   const CSSStepsTimingFunctionValue& stepsTimingFunction =
       toCSSStepsTimingFunctionValue(value);
   if (stepsTimingFunction.getStepPosition() ==
           StepsTimingFunction::StepPosition::MIDDLE &&
       !allowStepMiddle)
     return CSSTimingData::initialTimingFunction();
   return StepsTimingFunction::create(stepsTimingFunction.numberOfSteps(),
                                      stepsTimingFunction.getStepPosition());
 }
 
@@ skipping 171 matching lines @@
       verticalRule = SpaceImageRule;
       break;
     default:  // CSSValueRepeat
       verticalRule = RepeatImageRule;
       break;
   }
   image.setVerticalRule(verticalRule);
 }
 
 }  // namespace blink