Integrate mojo localstorage implementation with DOMStorageContext API.

content/browser/dom_storage/local_storage_context_mojo.h

 // Copyright 2016 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_LOCAL_STORAGE_CONTEXT_MOJO_H_
 #define CONTENT_BROWSER_DOM_STORAGE_LOCAL_STORAGE_CONTEXT_MOJO_H_
 
 #include <memory>
 
 #include "base/files/file_path.h"
@@ skipping 22 matching lines @@
   LocalStorageContextMojo(service_manager::Connector* connector,
                           const base::FilePath& subdirectory);
   ~LocalStorageContextMojo();
 
   void OpenLocalStorage(const url::Origin& origin,
                         mojom::LevelDBWrapperRequest request);
   void GetStorageUsage(GetStorageUsageCallback callback);
   void DeleteStorage(const url::Origin& origin);
   // Like DeleteStorage(), but also deletes storage for all sub-origins.
   void DeleteStorageForPhysicalOrigin(const url::Origin& origin);
+  void Flush();
 
   void SetDatabaseForTesting(leveldb::mojom::LevelDBDatabasePtr database);
 
  private:
   // Runs |callback| immediately if already connected to a database, otherwise
   // delays running |callback| untill after a connection has been established.
   // Initiates connecting to the database if no connection is in progres yet.
   void RunWhenConnected(base::OnceClosure callback);
 
   void OnLevelDBWrapperHasNoBindings(const url::Origin& origin);
@@ skipping 48 matching lines @@
 
   // Maps between an origin and its prefixed LevelDB view.
   std::map<url::Origin, std::unique_ptr<LevelDBWrapperImpl>> level_db_wrappers_;
 
   base::WeakPtrFactory<LocalStorageContextMojo> weak_ptr_factory_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_DOM_STORAGE_LOCAL_STORAGE_CONTEXT_MOJO_H_