[oilpan] Make the oilpan branch build on Mac.

Source/core/inspector/InspectorStyleSheet.cpp

Index: Source/core/inspector/InspectorStyleSheet.cpp
diff --git a/Source/core/inspector/InspectorStyleSheet.cpp b/Source/core/inspector/InspectorStyleSheet.cpp
index a77fce146be9ff6036bce3cfec5971eb9beb263f..7b1b6d75439f2f3590db8741271a98d703a9e708 100644
--- a/Source/core/inspector/InspectorStyleSheet.cpp
+++ b/Source/core/inspector/InspectorStyleSheet.cpp
@@ -64,7 +64,8 @@
 #include <wtf/Vector.h>
 
 using WebCore::CSSRuleSourceData;
-using WebCore::Handle;
+// FIXME(oilpan): On mac we cannot add 'using WebCore::Handle' here because
+// it conflicts with a core framework Handle type that is visible here.
 using WebCore::Member;
 using WebCore::Result;
 using WebCore::RuleSourceDataVectorCollection;
@@ -109,7 +110,7 @@ void ParsedStyleSheet::setText(const String& text)
 static void flattenSourceData(Vector<Member<CSSRuleSourceData> >& dataList, Vector<Member<CSSRuleSourceData> >& target)
 {
     for (size_t i = 0; i < dataList.size(); ++i) {
-        Handle<CSSRuleSourceData> data = dataList.at(i);
+        WebCore::Handle<CSSRuleSourceData> data = dataList.at(i);
         if (data->type == CSSRuleSourceData::STYLE_RULE)
             target.append(data);
         else if (data->type == CSSRuleSourceData::MEDIA_RULE)