Implement all shorthand property.

Source/core/css/parser/CSSPropertyParser.cpp

Index: Source/core/css/parser/CSSPropertyParser.cpp
diff --git a/Source/core/css/parser/CSSPropertyParser.cpp b/Source/core/css/parser/CSSPropertyParser.cpp
index a2c0284fe3123bdd4d58ec7ee5725aaa0873869b..dcd0b1eff4977d7204e226f2c1a152bcf5d75f3e 100644
--- a/Source/core/css/parser/CSSPropertyParser.cpp
+++ b/Source/core/css/parser/CSSPropertyParser.cpp
@@ -1616,6 +1616,15 @@ bool CSSPropertyParser::parseValue(CSSPropertyID propId, bool important)
     case CSSPropertyPerspectiveOrigin:
     case CSSPropertyTransformOrigin:
         return false;
+
+    case CSSPropertyAll:
+        // FIXME: need to add CSSValueUnset here.
+        if (id == CSSValueInitial || id == CSSValueInherit) {
+            validPrimitive = true;
+            break;
+        }
+        return false;
+
     default:
         return parseSVGValue(propId, important);
     }
@@ -3089,13 +3098,14 @@ PassRefPtrWillBeRawPtr<CSSValue> CSSPropertyParser::parseAnimationProperty(Anima
     CSSParserValue* value = m_valueList->current();
     if (value->unit != CSSPrimitiveValue::CSS_IDENT)
         return nullptr;
-    CSSPropertyID result = cssPropertyID(value->string);
-    if (result && RuntimeCSSEnabled::isCSSPropertyEnabled(result))
-        return cssValuePool().createIdentifierValue(result);
+    // We should treat "all" as CSSValue here.
     if (equalIgnoringCase(value, "all")) {
         context.sawAnimationPropertyKeyword();
         return cssValuePool().createIdentifierValue(CSSValueAll);
     }
+    CSSPropertyID result = cssPropertyID(value->string);
+    if (result && RuntimeCSSEnabled::isCSSPropertyEnabled(result))
+        return cssValuePool().createIdentifierValue(result);
     if (equalIgnoringCase(value, "none")) {
         context.commitAnimationPropertyKeyword();
         context.sawAnimationPropertyKeyword();
@@ -7033,7 +7043,9 @@ bool CSSPropertyParser::parseWillChange(bool important)
 
         CSSPropertyID property = cssPropertyID(currentValue->string);
         if (property && RuntimeCSSEnabled::isCSSPropertyEnabled(property)) {
-            if (property == CSSPropertyWillChange)
+            // Now "all" is used by both CSSValue and CSSPropertyValue.
+            // Need to return false when currentValue is CSSPropertyAll.
+            if (property == CSSPropertyWillChange || property == CSSPropertyAll)
                 return false;
             values->append(cssValuePool().createIdentifierValue(property));
         } else {