Move signin status and current user information into AppListModel.

ui/app_list/test/app_list_test_model.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 UI_APP_LIST_TEST_APP_LIST_TEST_MODEL_H_
 #define UI_APP_LIST_TEST_APP_LIST_TEST_MODEL_H_
 
 #include <string>
 
 #include "ui/app_list/app_list_model.h"
 
 namespace app_list {
 
 class AppListItemModel;
 
 namespace test {
 
 // Extends AppListModel with helper functions for use in tests.
 class AppListTestModel : public AppListModel {
  public:
-  AppListTestModel() {}
+  AppListTestModel();
 
   // Populate the model with |n| items titled "Item #".
   void PopulateApps(int n);
 
   // Populate the model with an item titled "Item |id|".
   void PopulateAppWithId(int id);
 
   // Get a string of all apps in |model| joined with ','.
   std::string GetModelContent();
 
   AppListItemModel* CreateItem(const std::string& title);
   void AddItem(const std::string& title);
 
   // Call SetHighlighted on the specified item.
   void HighlightItemAt(int index);
 
  private:
   DISALLOW_COPY_AND_ASSIGN(AppListTestModel);
 };
 
 }  // namespace test
 }  // namespace app_list
 
 #endif  // UI_APP_LIST_TEST_APP_LIST_TEST_MODEL_H_