Allow use of @apply and custom properties in InlineStylePropertyMap::getProperties()

third_party/WebKit/Source/core/css/cssom/InlineStylePropertyMap.cpp

Index: third_party/WebKit/Source/core/css/cssom/InlineStylePropertyMap.cpp
diff --git a/third_party/WebKit/Source/core/css/cssom/InlineStylePropertyMap.cpp b/third_party/WebKit/Source/core/css/cssom/InlineStylePropertyMap.cpp
index 43299903125d63987626dbe3b4c2c8309ca39f4f..c582d451b6aa6b9a88f0f98ff68e69ac7120c2f2 100644
--- a/third_party/WebKit/Source/core/css/cssom/InlineStylePropertyMap.cpp
+++ b/third_party/WebKit/Source/core/css/cssom/InlineStylePropertyMap.cpp
@@ -54,7 +54,15 @@ Vector<String> InlineStylePropertyMap::getProperties()
     StylePropertySet& inlineStyleSet = m_ownerElement->ensureMutableInlineStyle();
     for (unsigned i = 0; i < inlineStyleSet.propertyCount(); i++) {
         CSSPropertyID propertyID = inlineStyleSet.propertyAt(i).id();
-        result.append(getPropertyNameString(propertyID));
+        if (propertyID == CSSPropertyVariable) {
+            StylePropertySet::PropertyReference propertyReference = inlineStyleSet.propertyAt(i);
+            const CSSCustomPropertyDeclaration& customDeclaration = toCSSCustomPropertyDeclaration(propertyReference.value());
+            result.append(customDeclaration.name());
+        } else if (propertyID == CSSPropertyApplyAtRule) {
+            result.append("@apply");

[esprehn, 2016/08/10 00:39:43]

This is mallocing a string for every @apply rule, I think you want a static
string instead.

DEFINE_STATIC_LOCAL(const String, "@apply", kAtApply)

or something.

This also adds duplicate @apply entries into the return value, I don't think
it's supposed to ever have duplicates.

[meade_UTC10, 2016/08/10 01:59:35]

Done.

+        } else {
+            result.append(getPropertyNameString(propertyID));

[sashab, 2016/08/09 01:14:36]

Maybe add the if-statement back as a DCHECK? :)

[meade_UTC10, 2016/08/10 01:59:35]

Done.

+        }
     }
     return result;
 }