Implement animations for Independent CSS Transform Properties

Source/core/animation/StringKeyframe.cpp

Index: Source/core/animation/StringKeyframe.cpp
diff --git a/Source/core/animation/StringKeyframe.cpp b/Source/core/animation/StringKeyframe.cpp
index 82810b8d47303bddf8481ecfb0c0bdd34a809b53..beb1aeeb533e7ddb8f4fc4682da754bed7a240a2 100644
--- a/Source/core/animation/StringKeyframe.cpp
+++ b/Source/core/animation/StringKeyframe.cpp
@@ -402,6 +402,24 @@ PassRefPtrWillBeRawPtr<Interpolation> StringKeyframe::CSSPropertySpecificKeyfram
         break;
     }
 
+    case CSSPropertyTranslate: {
+        RefPtrWillBeRawPtr<Interpolation> interpolation = ListStyleInterpolation<LengthStyleInterpolation>::maybeCreateFromList(*fromCSSValue, *toCSSValue, property, range);
+        if (interpolation)
+            return interpolation.release();
+
+        fallBackToLegacy = true;

[Eric Willigers, 2015/06/24 03:43:08]

Do we need this line? Same for Scale. I suspect we only need fall back for
'inherit' etc., and that case is already covered by "if
(fromCSSValue->isCSSWideKeyword() || toCSSValue->isCSSWideKeyword())" further
down.

[soonm, 2015/06/24 05:00:44]

ListStyleInterpolation does not handle the case where the length of
'fromCSSValue' is different from 'toCSSValue' value list.

So I could insert default values into the list when they are different length.
Checking with Alan if that's ok.

[alancutter (OOO until 2018), 2015/06/25 01:33:09]

Add TODO for this for now just so it's clear what's not supported by this code
path. I don't think we should be making major changes to the current
Interpolation code other than migrating away from it.

[soonm, 2015/06/26 02:52:34]

Done - Add TODO about legacy mode when list are different lengths.

[soonm, 2015/06/26 02:52:34]

Done - Add TODO about legacy mode when list are different lengths.

+        break;
+    }
+
+    case CSSPropertyScale: {
+        RefPtrWillBeRawPtr<Interpolation> interpolation = ListStyleInterpolation<DoubleStyleInterpolation>::maybeCreateFromList(*fromCSSValue, *toCSSValue, property, range);
+        if (interpolation)
+            return interpolation.release();
+
+        fallBackToLegacy = true;
+        break;
+    }
+
     default:
         // Fall back to LegacyStyleInterpolation.
         fallBackToLegacy = true;