Fix crash in the experimental app list StartPageView.

ui/app_list/test/app_list_test_view_delegate.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_VIEW_DELEGATE_H_
 #define UI_APP_LIST_TEST_APP_LIST_TEST_VIEW_DELEGATE_H_
 
 #include <map>
 #include <string>
 
@@ skipping 18 matching lines @@
 
   int dismiss_count() { return dismiss_count_; }
   int open_search_result_count() { return open_search_result_count_; }
   void SetUsers(const Users& users) {
     users_ = users;
   }
   std::map<size_t, int> open_search_result_counts() {
     return open_search_result_counts_;
   }
 
+  // Sets the number of apps that the model will be created with the next time
+  // SetProfileByPath() is called.
+  void set_next_profile_app_count(int apps) { next_profile_app_count_ = apps; }
+
   void set_auto_launch_timeout(const base::TimeDelta& timeout) {
     auto_launch_timeout_ = timeout;
   }
 
   // Sets the signin status of the signin delegate, creating one if there isn't
   // one already.
   void SetSignedIn(bool signed_in);
 
   // AppListViewDelegate overrides:
   virtual bool ForceNativeDesktop() const OVERRIDE;
-  virtual void SetProfileByPath(const base::FilePath& profile_path) OVERRIDE {}
+  virtual void SetProfileByPath(const base::FilePath& profile_path) OVERRIDE;
   virtual AppListModel* GetModel() OVERRIDE;
   virtual SigninDelegate* GetSigninDelegate() OVERRIDE;
   virtual SpeechUIModel* GetSpeechUI() OVERRIDE;
   virtual void GetShortcutPathForApp(
       const std::string& app_id,
       const base::Callback<void(const base::FilePath&)>& callback) OVERRIDE;
   virtual void StartSearch() OVERRIDE {}
   virtual void StopSearch() OVERRIDE {}
   virtual void OpenSearchResult(SearchResult* result,
                                 bool auto_launch,
@@ skipping 22 matching lines @@
 
   // Do a bulk replacement of the items in the model.
   void ReplaceTestModel(int item_count);
 
   AppListTestModel* ReleaseTestModel() { return model_.release(); }
   AppListTestModel* GetTestModel() { return model_.get(); }
 
  private:
   int dismiss_count_;
   int open_search_result_count_;
+  int next_profile_app_count_;
   std::map<size_t, int> open_search_result_counts_;
   Users users_;
   scoped_ptr<TestSigninDelegate> test_signin_delegate_;
   scoped_ptr<AppListTestModel> model_;
   ObserverList<AppListViewDelegateObserver> observers_;
   SpeechUIModel speech_ui_;
   base::TimeDelta auto_launch_timeout_;
 
   DISALLOW_COPY_AND_ASSIGN(AppListTestViewDelegate);
 };
 
 }  // namespace test
 }  // namespace app_list
 
 #endif  // UI_APP_LIST_TEST_APP_LIST_TEST_VIEW_DELEGATE_H_