remove CSS 'all' property.

sky/engine/core/css/parser/CSSPropertyParser.cpp

Index: sky/engine/core/css/parser/CSSPropertyParser.cpp
diff --git a/sky/engine/core/css/parser/CSSPropertyParser.cpp b/sky/engine/core/css/parser/CSSPropertyParser.cpp
index 2361012e06e81c1c1f8fcba83a1bfe5452d3bc9d..3a7502a5afc9a4b278207d9bde64a3be93af5b90 100644
--- a/sky/engine/core/css/parser/CSSPropertyParser.cpp
+++ b/sky/engine/core/css/parser/CSSPropertyParser.cpp
@@ -5280,7 +5280,7 @@ PassRefPtr<CSSValue> CSSPropertyParser::parseWillChange()
             ASSERT(CSSPropertyMetadata::isEnabledProperty(property));
             // Now "all" is used by both CSSValue and CSSPropertyValue.
             // Need to return nullptr when currentValue is CSSPropertyAll.
-            if (property == CSSPropertyWillChange || property == CSSPropertyAll)
+            if (property == CSSPropertyWillChange)
                 return nullptr;
             values->append(cssValuePool().createIdentifierValue(property));
         } else {