Switch database/file_identifier to std::string, remove createFromDatabaseIdentifier calls

content/browser/indexed_db/indexed_db_fake_backing_store.h

 // Copyright 2013 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_INDEXED_DB_INDEXED_DB_FAKE_BACKING_STORE_H_
 #define CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_FAKE_BACKING_STORE_H_
 
 #include <vector>
 
 #include "content/browser/indexed_db/indexed_db_backing_store.h"
 
 namespace content {
 
 class IndexedDBFakeBackingStore : public IndexedDBBackingStore {
  public:
   IndexedDBFakeBackingStore()
-      : IndexedDBBackingStore(string16(),
+      : IndexedDBBackingStore(std::string(),
                               scoped_ptr<LevelDBDatabase>(),
                               scoped_ptr<LevelDBComparator>()) {}
   virtual std::vector<string16> GetDatabaseNames() OVERRIDE;
   virtual bool GetIDBDatabaseMetaData(const string16& name,
                                       IndexedDBDatabaseMetadata*,
                                       bool* found) OVERRIDE;
   virtual bool CreateIDBDatabaseMetaData(const string16& name,
                                          const string16& version,
                                          int64 int_version,
                                          int64* row_id) OVERRIDE;
@@ skipping 83 matching lines @@
       OVERRIDE;
 
  protected:
   friend class base::RefCounted<IndexedDBFakeBackingStore>;
   virtual ~IndexedDBFakeBackingStore();
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_FAKE_BACKING_STORE_H_