Make font-size-adjust animatable.

Source/core/animation/StringKeyframe.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 #include "core/animation/StringKeyframe.h"
 
 #include "core/animation/ColorStyleInterpolation.h"
 #include "core/animation/CompositorAnimations.h"
 #include "core/animation/ConstantStyleInterpolation.h"
@@ skipping 93 matching lines @@
     case CSSPropertyFloodOpacity:
     case CSSPropertyStopOpacity:
     case CSSPropertyStrokeOpacity:
     case CSSPropertyShapeImageThreshold:
         return RangeZeroToOne;
     case CSSPropertyFillOpacity:
     case CSSPropertyOpacity:
         return RangeOpacityFIXME;
     case CSSPropertyStrokeMiterlimit:
         return RangeGreaterThanOrEqualToOne;
+    case CSSPropertyFontSizeAdjust:
+        return RangeNonNegative;
     default:
         ASSERT_NOT_REACHED();
         return RangeAll;
     }
 }
 
 } // namespace
 
 // FIXME: Refactor this into a generic piece that lives in InterpolationEffect, and a template parameter specific converter.
 PassRefPtrWillBeRawPtr<Interpolation> StringKeyframe::PropertySpecificKeyframe::maybeCreateInterpolation(CSSPropertyID property, Keyframe::PropertySpecificKeyframe& end, Element* element, const LayoutStyle* baseStyle) const
@@ skipping 83 matching lines @@
 
         // FIXME: Handle keywords e.g. 'smaller', 'larger'.
         if (property == CSSPropertyFontSize)
             fallBackToLegacy = true;
 
         // FIXME: Handle keywords e.g. 'baseline', 'sub'.
         if (property == CSSPropertyBaselineShift)
             fallBackToLegacy = true;
 
         break;
+    case CSSPropertyFontSizeAdjust:
+        if (AnimatableValue::usesDefaultInterpolation(

[dstockwell, 2015/03/17 23:36:46]

Hmm, instead of adding these checks here, we can just fall back to the legacy
path for the time being:

case CSSPropertyFontSizeAdjust:
    // FIXME: Requires special handing for 0.
    fallBackToLegacy = true;
    break;

[changseok, 2015/03/18 09:05:02]

Done.

+            StyleResolver::createAnimatableValueSnapshot(*element, baseStyle, property, fromCSSValue).get(),
+            StyleResolver::createAnimatableValueSnapshot(*element, baseStyle, property, toCSSValue).get())) {
+            forceDefaultInterpolation = true;
+            break;
+        }
     case CSSPropertyOrphans:
     case CSSPropertyWidows:
     case CSSPropertyZIndex:
     case CSSPropertyWebkitColumnCount:
     case CSSPropertyShapeImageThreshold:
     case CSSPropertyFillOpacity:
     case CSSPropertyFloodOpacity:
     case CSSPropertyOpacity:
     case CSSPropertyStopOpacity:
     case CSSPropertyStrokeOpacity:
@@ skipping 171 matching lines @@
 }
 
 DEFINE_TRACE(StringKeyframe::PropertySpecificKeyframe)
 {
     visitor->trace(m_value);
     visitor->trace(m_animatableValueCache);
     Keyframe::PropertySpecificKeyframe::trace(visitor);
 }
 
 }