CSS Motion Path: Implement animation for the offset-path property

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

 /*
  * Copyright (C) 2013 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 774 matching lines @@
     }
     case CSSPropertyTransformOrigin:
       style->setTransformOrigin(animatableValueToTransformOrigin(value, state));
       return;
     case CSSPropertyOffsetAnchor:
       style->setOffsetAnchor(animatableValueToLengthPoint(value, state));
       return;
     case CSSPropertyOffsetDistance:
       style->setOffsetDistance(animatableValueToLength(value, state));
       return;
+    case CSSPropertyOffsetPath:
+      style->setOffsetPath(toAnimatablePath(value)->path());
+      return;
     case CSSPropertyOffsetPosition:
       style->setOffsetPosition(animatableValueToLengthPoint(value, state));
       return;
     case CSSPropertyOffsetRotate:
     case CSSPropertyOffsetRotation:
       style->setOffsetRotation(StyleOffsetRotation(
           toAnimatableDoubleAndBool(value)->toDouble(),
           toAnimatableDoubleAndBool(value)->flag() ? OffsetRotationAuto
                                                    : OffsetRotationFixed));
       return;
@@ skipping 60 matching lines @@
       style->setRy(
           animatableValueToLength(value, state, ValueRangeNonNegative));
       return;
 
     default:
       ASSERT_NOT_REACHED();
   }
 }
 
 }  // namespace blink