[Downloads] Add real observers to MockDownloadItem.

chrome/browser/download/all_download_item_notifier_unittest.cc

 // Copyright (c) 2012 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.
 
 #include "chrome/browser/download/all_download_item_notifier.h"
 
 #include "content/public/test/mock_download_item.h"
 #include "content/public/test/mock_download_manager.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ skipping 67 matching lines @@
 };
 
 }  // namespace
 
 TEST_F(AllDownloadItemNotifierTest,
     AllDownloadItemNotifierTest_0) {
   content::DownloadManager::DownloadVector items;
   items.push_back(&item());
   EXPECT_CALL(manager(), GetAllDownloads(_))
     .WillOnce(SetArgPointee<0>(items));
-  EXPECT_CALL(item(), AddObserver(_));
   SetNotifier();
 
   EXPECT_CALL(observer(), OnDownloadUpdated(&manager(), &item()));
   NotifierAsItemObserver()->OnDownloadUpdated(&item());
 
   EXPECT_CALL(observer(), OnDownloadOpened(&manager(), &item()));
   NotifierAsItemObserver()->OnDownloadOpened(&item());
 
   EXPECT_CALL(observer(), OnDownloadRemoved(&manager(), &item()));
   NotifierAsItemObserver()->OnDownloadRemoved(&item());
 
-  EXPECT_CALL(item(), RemoveObserver(NotifierAsItemObserver()));
   EXPECT_CALL(manager(), RemoveObserver(NotifierAsManagerObserver()));
   ClearNotifier();
 }
 
 TEST_F(AllDownloadItemNotifierTest,
     AllDownloadItemNotifierTest_1) {
   EXPECT_CALL(manager(), GetAllDownloads(_));
   SetNotifier();
 
-  EXPECT_CALL(item(), AddObserver(NotifierAsItemObserver()));
   EXPECT_CALL(observer(), OnDownloadCreated(&manager(), &item()));
   NotifierAsManagerObserver()->OnDownloadCreated(
       &manager(), &item());
 
   EXPECT_CALL(manager(), RemoveObserver(NotifierAsManagerObserver()));
   NotifierAsManagerObserver()->ManagerGoingDown(&manager());
 
-  EXPECT_CALL(item(), RemoveObserver(NotifierAsItemObserver()));
-  NotifierAsItemObserver()->OnDownloadDestroyed(&item());
-
   ClearNotifier();
 }