Store [-webkit-]transform-origin as a TransformOrigin.

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 100 matching lines @@
 }
 
 LengthPoint animatableValueToLengthPoint(const AnimatableValue* value, const StyleResolverState& state, ValueRange range = ValueRangeAll)
 {
     const AnimatableLengthPoint* animatableLengthPoint = toAnimatableLengthPoint(value);
     return LengthPoint(
         animatableValueToLength(animatableLengthPoint->x(), state, range),
         animatableValueToLength(animatableLengthPoint->y(), state, range));
 }
 
+TransformOrigin animatableValueToTransformOrigin(const AnimatableValue* value, const StyleResolverState& state, ValueRange range = ValueRangeAll)
+{
+    const AnimatableLengthPoint3D* animatableLengthPoint3D = toAnimatableLengthPoint3D(value);
+    return TransformOrigin(
+        animatableValueToLength(animatableLengthPoint3D->x(), state),
+        animatableValueToLength(animatableLengthPoint3D->y(), state),
+        clampTo<float>(toAnimatableDouble(animatableLengthPoint3D->z())->toDouble())
+    );
+}
+
 LengthSize animatableValueToLengthSize(const AnimatableValue* value, const StyleResolverState& state, ValueRange range)
 {
     const AnimatableLengthSize* animatableLengthSize = toAnimatableLengthSize(value);
     return LengthSize(
         animatableValueToLength(animatableLengthSize->width(), state, range),
         animatableValueToLength(animatableLengthSize->height(), state, range));
 }
 
 void setFillSize(FillLayer* fillLayer, const AnimatableValue* value, const StyleResolverState& state)
 {
@@ skipping 444 matching lines @@
     case CSSPropertyWebkitTextStrokeColor:
         style->setTextStrokeColor(toAnimatableColor(value)->color());
         style->setVisitedLinkTextStrokeColor(toAnimatableColor(value)->visitedLinkColor());
         return;
     case CSSPropertyTransform: {
         const TransformOperations& operations = toAnimatableTransform(value)->transformOperations();
         // FIXME: This normalization (handling of 'none') should be performed at input in AnimatableValueFactory.
         style->setTransform(operations.size() ? operations : TransformOperations(true));
         return;
     }
-    case CSSPropertyTransformOrigin: {
-        const AnimatableLengthPoint3D* animatableLengthPoint3D = toAnimatableLengthPoint3D(value);
-        style->setTransformOriginX(animatableValueToLength(animatableLengthPoint3D->x(), state));
-        style->setTransformOriginY(animatableValueToLength(animatableLengthPoint3D->y(), state));
-        style->setTransformOriginZ(clampTo<float>(toAnimatableDouble(animatableLengthPoint3D->z())->toDouble()));
+    case CSSPropertyTransformOrigin:
+        style->setTransformOrigin(animatableValueToTransformOrigin(value, state));
         return;
-    }
     case CSSPropertyWidows:
         style->setWidows(animatableValueRoundClampTo<unsigned short>(value, 1));
         return;
     case CSSPropertyWidth:
         style->setWidth(animatableValueToLength(value, state, ValueRangeNonNegative));
         return;
     case CSSPropertyWordSpacing:
         style->setWordSpacing(clampTo<float>(toAnimatableDouble(value)->toDouble()));
         return;
     case CSSPropertyVerticalAlign:
         style->setVerticalAlignLength(animatableValueToLength(value, state));
         return;
     case CSSPropertyVisibility:
         style->setVisibility(toAnimatableVisibility(value)->visibility());
         return;
     case CSSPropertyZIndex:
         style->setZIndex(animatableValueRoundClampTo<int>(value));
         return;
     case CSSPropertyZoom:
         style->setZoom(clampTo<float>(toAnimatableDouble(value)->toDouble(), std::numeric_limits<float>::denorm_min()));
         return;
     default:
         ASSERT_NOT_REACHED();
     }
 }
 
 } // namespace blink