Oilpan: Reapply: Remove all the RefPtrs and most of the raw pointers to style

Source/core/inspector/InspectorStyleSheet.h

Index: Source/core/inspector/InspectorStyleSheet.h
diff --git a/Source/core/inspector/InspectorStyleSheet.h b/Source/core/inspector/InspectorStyleSheet.h
index 3c9626ba0de62ed734dd3041042b1418c55e3017..3df3fe0ad9ae758f203dd1ea321ebd6d45f6929c 100644
--- a/Source/core/inspector/InspectorStyleSheet.h
+++ b/Source/core/inspector/InspectorStyleSheet.h
@@ -170,7 +170,7 @@ public:
         virtual void didReparseStyleSheet() = 0;
     };
 
-    static PassRefPtr<InspectorStyleSheet> create(InspectorPageAgent*, InspectorResourceAgent*, const String& id, PassRefPtr<CSSStyleSheet> pageStyleSheet, TypeBuilder::CSS::StyleSheetOrigin::Enum, const String& documentURL, Listener*);
+    static PassRefPtr<InspectorStyleSheet> create(InspectorPageAgent*, InspectorResourceAgent*, const String& id, PassRefPtrWillBeRawPtr<CSSStyleSheet> pageStyleSheet, TypeBuilder::CSS::StyleSheetOrigin::Enum, const String& documentURL, Listener*);
     static String styleSheetURL(CSSStyleSheet* pageStyleSheet);
     static void collectFlatRules(PassRefPtrWillBeRawPtr<CSSRuleList>, CSSRuleVector* result);
 
@@ -204,7 +204,7 @@ public:
     InspectorCSSId styleId(CSSStyleDeclaration* style) const { return ruleOrStyleId(style); }
 
 protected:
-    InspectorStyleSheet(InspectorPageAgent*, InspectorResourceAgent*, const String& id, PassRefPtr<CSSStyleSheet> pageStyleSheet, TypeBuilder::CSS::StyleSheetOrigin::Enum, const String& documentURL, Listener*);
+    InspectorStyleSheet(InspectorPageAgent*, InspectorResourceAgent*, const String& id, PassRefPtrWillBeRawPtr<CSSStyleSheet> pageStyleSheet, TypeBuilder::CSS::StyleSheetOrigin::Enum, const String& documentURL, Listener*);
 
     InspectorCSSId ruleOrStyleId(CSSStyleDeclaration* style) const;
     virtual PassRefPtr<CSSRuleSourceData> ruleSourceDataFor(CSSStyleDeclaration*) const;
@@ -238,7 +238,7 @@ private:
     InspectorPageAgent* m_pageAgent;
     InspectorResourceAgent* m_resourceAgent;
     String m_id;
-    RefPtr<CSSStyleSheet> m_pageStyleSheet;
+    RefPtrWillBePersistent<CSSStyleSheet> m_pageStyleSheet;
     TypeBuilder::CSS::StyleSheetOrigin::Enum m_origin;
     String m_documentURL;
     ParsedStyleSheet* m_parsedStyleSheet;