Create an AutofillBackend interface

components/webdata/common/web_data_service_backend.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 COMPONENTS_WEBDATA_COMMON_WEB_DATA_SERVICE_BACKEND_H_
 #define COMPONENTS_WEBDATA_COMMON_WEB_DATA_SERVICE_BACKEND_H_
 
 #include "base/basictypes.h"
 #include "base/callback_forward.h"
 #include "base/compiler_specific.h"
@@ skipping 11 matching lines @@
 class WebDataRequestManager;
 
 namespace tracked_objects {
 class Location;
 }
 
 // WebDataServiceBackend handles all database tasks posted by
 // WebDatabaseService. It is refcounted to allow asynchronous destruction on the
 // DB thread.
 
+// TODO(caitkp): Rename this class to WebDatabaseBackend.
+
 class WebDataServiceBackend
     : public base::RefCountedThreadSafe<
           WebDataServiceBackend,
           content::BrowserThread::DeleteOnDBThread> {
  public:
   class Delegate {
     public:
     virtual ~Delegate() {}
 
     // Invoked when the backend has finished loading the db.
@@ skipping 70 matching lines @@
   // fails), used to avoid continually trying to reinit if the db init fails.
   bool init_complete_;
 
   // Delegate. See the class definition above for more information.
   scoped_ptr<Delegate> delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(WebDataServiceBackend);
 };
 
 #endif  // COMPONENTS_WEBDATA_COMMON_WEB_DATA_SERVICE_BACKEND_H_