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

Source/core/inspector/InspectorDOMStorageAgent.cpp

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  * Copyright (C) 2013 Samsung Electronics. 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.
@@ skipping 68 matching lines @@
 }
 
 void InspectorDOMStorageAgent::trace(Visitor* visitor)
 {
     visitor->trace(m_pageAgent);
     InspectorBaseAgent::trace(visitor);
 }
 
 void InspectorDOMStorageAgent::setFrontend(InspectorFrontend* frontend)
 {
-    m_frontend = frontend;
+    m_frontend = frontend->domstorage();
 }
 
 void InspectorDOMStorageAgent::clearFrontend()
 {
     m_frontend = 0;
     disable(0);
 }
 
 void InspectorDOMStorageAgent::restore()
 {
@@ skipping 86 matching lines @@
 }
 
 void InspectorDOMStorageAgent::didDispatchDOMStorageEvent(const String& key, const String& oldValue, const String& newValue, StorageType storageType, SecurityOrigin* securityOrigin)
 {
     if (!m_frontend || !isEnabled())
         return;
 
     RefPtr<TypeBuilder::DOMStorage::StorageId> id = storageId(securityOrigin, storageType == LocalStorage);
 
     if (key.isNull())
-        m_frontend->domstorage()->domStorageItemsCleared(id);
+        m_frontend->domStorageItemsCleared(id);
     else if (newValue.isNull())
-        m_frontend->domstorage()->domStorageItemRemoved(id, key);
+        m_frontend->domStorageItemRemoved(id, key);
     else if (oldValue.isNull())
-        m_frontend->domstorage()->domStorageItemAdded(id, key, newValue);
+        m_frontend->domStorageItemAdded(id, key, newValue);
     else
-        m_frontend->domstorage()->domStorageItemUpdated(id, key, oldValue, newValue);
+        m_frontend->domStorageItemUpdated(id, key, oldValue, newValue);
 }
 
 PassOwnPtrWillBeRawPtr<StorageArea> InspectorDOMStorageAgent::findStorageArea(ErrorString* errorString, const RefPtr<JSONObject>& storageId, LocalFrame*& targetFrame)
 {
     String securityOrigin;
     bool isLocalStorage = false;
     bool success = storageId->getString("securityOrigin", &securityOrigin);
     if (success)
         success = storageId->getBoolean("isLocalStorage", &isLocalStorage);
     if (!success) {
@@ skipping 10 matching lines @@
     }
     targetFrame = frame;
 
     if (isLocalStorage)
         return StorageNamespace::localStorageArea(frame->document()->securityOrigin());
     return m_pageAgent->page()->sessionStorage()->storageArea(frame->document()->securityOrigin());
 }
 
 } // namespace blink