Fix serialization of css-wide keywords in custom properties

third_party/WebKit/Source/core/css/StylePropertySerializer.cpp

Index: third_party/WebKit/Source/core/css/StylePropertySerializer.cpp
diff --git a/third_party/WebKit/Source/core/css/StylePropertySerializer.cpp b/third_party/WebKit/Source/core/css/StylePropertySerializer.cpp
index bb49fdcb73eba225d796584313a83c89dc14e4c5..d4e360357eb034b44e2ca6c174ef6da8ba14b954 100644
--- a/third_party/WebKit/Source/core/css/StylePropertySerializer.cpp
+++ b/third_party/WebKit/Source/core/css/StylePropertySerializer.cpp
@@ -184,7 +184,10 @@ String StylePropertySerializer::getCustomPropertyText(const PropertyValueForSeri
     const CSSCustomPropertyDeclaration* value = toCSSCustomPropertyDeclaration(property.value());
     result.append(value->name());
     result.append(':');
-    result.append(value->customCSSText());

[Timothy Loh, 2016/07/29 01:15:06]

I'd rather this line just left as is (looks odd to have the String defined
before the if() but not used until after it)

[rwlbuis, 2016/07/29 01:25:17]

Well spotted, I had a check on customPropertyValue in an earlier version, then
removed that check but forgot to remove the temp String.

+    String customPropertyValue = value->customCSSText();
+    if (!value->value())
+        result.append(' ');
+    result.append(customPropertyValue);
     if (property.isImportant())
         result.append(" !important");
     result.append(';');