DevTools: Make the way inspectorFrontend is referenced in agents consistent in all of them.

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 11 matching lines @@
  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef InspectorDOMStorageAgent_h
 #define InspectorDOMStorageAgent_h
 
+#include "core/InspectorFrontend.h"
 #include "core/inspector/InspectorBaseAgent.h"
 #include "core/storage/StorageArea.h"
 #include "wtf/PassOwnPtr.h"
 #include "wtf/text/WTFString.h"
 
 namespace blink {
 
 class LocalFrame;
-class InspectorFrontend;
 class InspectorPageAgent;
 class InstrumentingAgents;
 class JSONObject;
 class Storage;
 class StorageArea;
 
 typedef String ErrorString;
 
 class InspectorDOMStorageAgent FINAL : public InspectorBaseAgent<InspectorDOMStorageAgent>, public InspectorBackendDispatcher::DOMStorageCommandHandler {
 public:
@@ skipping 20 matching lines @@
 
 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* m_frontend;
+    InspectorFrontend::DOMStorage* m_frontend;
 };
 
 } // namespace blink
 
 #endif // !defined(InspectorDOMStorageAgent_h)