Switch to using the async DomStorage IPC messages and add a caching layer …

content/browser/dom_storage/dom_storage_message_filter.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_BROWSER_DOM_STORAGE_DOM_STORAGE_MESSAGE_FILTER_H_
 #define CONTENT_BROWSER_DOM_STORAGE_DOM_STORAGE_MESSAGE_FILTER_H_
 #pragma once
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 32 matching lines @@
   virtual base::TaskRunner* OverrideTaskRunnerForMessage(
       const IPC::Message& message) OVERRIDE;
   virtual bool OnMessageReceived(const IPC::Message& message,
                                  bool* message_was_ok) OVERRIDE;
 
   // Message Handlers.
   void OnOpenStorageArea(int connection_id, int64 namespace_id,
                          const GURL& origin);
   void OnCloseStorageArea(int connection_id);
   void OnLoadStorageArea(int connection_id, dom_storage::ValuesMap* map);
-  void OnLength(int connection_id, unsigned* length);
-  void OnKey(int connection_id, unsigned index, NullableString16* key);
-  void OnGetItem(int connection_id, const string16& key,
-                 NullableString16* value);
   void OnSetItem(int connection_id, const string16& key,
-                 const string16& value, const GURL& page_url,
-                 WebKit::WebStorageArea::Result* result,
-                 NullableString16* old_value);
-  void OnSetItemAsync(int connection_id, int operation_id, const string16& key,
-                      const string16& value, const GURL& page_url);
-
+                 const string16& value, const GURL& page_url);
   void OnRemoveItem(int connection_id, const string16& key,
-                    const GURL& page_url, NullableString16* old_value);
-  void OnRemoveItemAsync(int connection_id, int operation_id,
-                         const string16& key, const GURL& page_url);
-  void OnClear(int connection_id, const GURL& url, bool* something_cleared);
-  void OnClearAsync(int connection_id, int operation_id, const GURL& page_url);
+                    const GURL& page_url);
+  void OnClear(int connection_id, const GURL& page_url);
+  void OnFlushMessages();
 
   // DomStorageContext::EventObserver implementation which
   // sends events back to our renderer process.
   virtual void OnDomStorageItemSet(
       const dom_storage::DomStorageArea* area,
       const string16& key,
       const string16& new_value,
       const NullableString16& old_value,
       const GURL& page_url) OVERRIDE;
   virtual void OnDomStorageItemRemoved(
@@ skipping 13 matching lines @@
       const NullableString16& old_value);
 
   scoped_refptr<dom_storage::DomStorageContext> context_;
   scoped_ptr<dom_storage::DomStorageHost> host_;
   int connection_dispatching_message_for_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(DOMStorageMessageFilter);
 };
 
 #endif  // CONTENT_BROWSER_DOM_STORAGE_DOM_STORAGE_MESSAGE_FILTER_H_