DevTools: use per-LocalFrame instrumenting agents instead of per-Page ones.

Source/core/inspector/InspectorDOMStorageAgent.h

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 47 matching lines @@
     virtual void restore() override;
 
     // Called from the front-end.
     virtual void enable(ErrorString*) override;
     virtual void disable(ErrorString*) override;
     virtual void getDOMStorageItems(ErrorString*, const RefPtr<JSONObject>& storageId, RefPtr<TypeBuilder::Array<TypeBuilder::Array<String> > >& items) override;
     virtual void setDOMStorageItem(ErrorString*, const RefPtr<JSONObject>& storageId, const String& key, const String& value) override;
     virtual void removeDOMStorageItem(ErrorString*, const RefPtr<JSONObject>& storageId, const String& key) override;
 
     // Called from InspectorInstrumentation
-    void didDispatchDOMStorageEvent(const String& key, const String& oldValue, const String& newValue, StorageType, SecurityOrigin*);
+    void didDispatchDOMStorageEvent(LocalFrame*, const String& key, const String& oldValue, const String& newValue, StorageType, SecurityOrigin*);
 
 private:
 
     explicit InspectorDOMStorageAgent(InspectorPageAgent*);
 
     bool isEnabled() const;
     PassOwnPtrWillBeRawPtr<StorageArea> findStorageArea(ErrorString*, const RefPtr<JSONObject>&, LocalFrame*&);
     PassRefPtr<TypeBuilder::DOMStorage::StorageId> storageId(SecurityOrigin*, bool isLocalStorage);
 
     RawPtrWillBeMember<InspectorPageAgent> m_pageAgent;
     InspectorFrontend::DOMStorage* m_frontend;
 };
 
 } // namespace blink
 
 #endif // !defined(InspectorDOMStorageAgent_h)