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 441 matching lines @@
     const CSSCubicBezierTimingFunctionValue& cubic_timing_function =
         ToCSSCubicBezierTimingFunctionValue(value);
     return CubicBezierTimingFunction::Create(
         cubic_timing_function.X1(), cubic_timing_function.Y1(),
         cubic_timing_function.X2(), cubic_timing_function.Y2());
   }
 
   if (value.IsInitialValue())
     return CSSTimingData::InitialTimingFunction();
 
+  if (value.IsFramesTimingFunctionValue()) {
+    const CSSFramesTimingFunctionValue& frames_timing_function =
+        ToCSSFramesTimingFunctionValue(value);
+    return FramesTimingFunction::Create(
+        frames_timing_function.NumberOfFrames());
+  }
+
   const CSSStepsTimingFunctionValue& steps_timing_function =
       ToCSSStepsTimingFunctionValue(value);
   if (steps_timing_function.GetStepPosition() ==
           StepsTimingFunction::StepPosition::MIDDLE &&
       !allow_step_middle)
     return CSSTimingData::InitialTimingFunction();
   return StepsTimingFunction::Create(steps_timing_function.NumberOfSteps(),
                                      steps_timing_function.GetStepPosition());
 }
 
@@ skipping 171 matching lines @@
       vertical_rule = kSpaceImageRule;
       break;
     default:  // CSSValueRepeat
       vertical_rule = kRepeatImageRule;
       break;
   }
   image.SetVerticalRule(vertical_rule);
 }
 
 }  // namespace blink