Emit console warning when element.animate() keyframe value fails to parse

third_party/WebKit/Source/core/css/StylePropertySet.h

Index: third_party/WebKit/Source/core/css/StylePropertySet.h
diff --git a/third_party/WebKit/Source/core/css/StylePropertySet.h b/third_party/WebKit/Source/core/css/StylePropertySet.h
index b37343ed7b4a78a378243ed92a62bf10b8477626..edf15327815ac3a3577e500375fa7d3a32e60927 100644
--- a/third_party/WebKit/Source/core/css/StylePropertySet.h
+++ b/third_party/WebKit/Source/core/css/StylePropertySet.h
@@ -224,16 +224,20 @@ class CORE_EXPORT MutableStylePropertySet : public StylePropertySet {
   bool addParsedProperties(const HeapVector<CSSProperty, 256>&);
   bool addRespectingCascade(const CSSProperty&);
 
+  struct SetResult {
+    bool didParse;
+    bool didChange;
+  };
   // These expand shorthand properties into multiple properties.
-  bool setProperty(CSSPropertyID unresolvedProperty,
-                   const String& value,
-                   bool important = false,
-                   StyleSheetContents* contextStyleSheet = 0);
-  bool setProperty(const AtomicString& customPropertyName,
-                   const String& value,
-                   bool important,
-                   StyleSheetContents* contextStyleSheet,
-                   bool isAnimationTainted);
+  SetResult setProperty(CSSPropertyID unresolvedProperty,
+                        const String& value,
+                        bool important = false,
+                        StyleSheetContents* contextStyleSheet = 0);
+  SetResult setProperty(const AtomicString& customPropertyName,
+                        const String& value,
+                        bool important,
+                        StyleSheetContents* contextStyleSheet,
+                        bool isAnimationTainted);
   void setProperty(CSSPropertyID, const CSSValue&, bool important = false);
 
   // These do not. FIXME: This is too messy, we can do better.