Move TabStripModelDelegate off Browser into its own class.

chrome/browser/tab_restore_browsertest.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 "base/basictypes.h"
 #include "base/command_line.h"
 #include "base/file_path.h"
 #include "base/test/test_timeouts.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/app/chrome_command_ids.h"
@@ skipping 83 matching lines @@
     int tab_count = browser->tab_count();
     ASSERT_GT(tab_count, 0);
 
     // Restore the tab.
     ui_test_utils::WindowedNotificationObserver tab_added_observer(
       chrome::NOTIFICATION_TAB_PARENTED,
       content::NotificationService::AllSources());
     ui_test_utils::WindowedNotificationObserver tab_loaded_observer(
       content::NOTIFICATION_LOAD_STOP,
       content::NotificationService::AllSources());
-    browser->RestoreTab();
+    chrome::RestoreTab(browser);
     tab_added_observer.Wait();
     tab_loaded_observer.Wait();
 
     if (expect_new_window) {
       int new_window_count = static_cast<int>(BrowserList::size());
       EXPECT_EQ(++window_count, new_window_count);
       browser = GetBrowser(expected_window_index);
     } else {
       EXPECT_EQ(++tab_count, browser->tab_count());
     }
@@ skipping 351 matching lines @@
   close_window_observer.Wait();
   EXPECT_EQ(window_count - 1, BrowserList::size());
 
   // Restore the window.
   ui_test_utils::WindowedNotificationObserver open_window_observer(
       chrome::NOTIFICATION_BROWSER_OPENED,
       content::NotificationService::AllSources());
   ui_test_utils::WindowedNotificationObserver load_stop_observer(
       content::NOTIFICATION_LOAD_STOP,
       content::NotificationService::AllSources());
-  (*BrowserList::begin())->RestoreTab();
+  chrome::RestoreTab(*BrowserList::begin());
   open_window_observer.Wait();
   EXPECT_EQ(window_count, BrowserList::size());
 
   Browser* browser = GetBrowser(1);
   EXPECT_EQ(initial_tab_count + 2, browser->tab_count());
   load_stop_observer.Wait();
 
   content::WebContents* restored_tab =
       chrome::GetWebContentsAt(browser, initial_tab_count);
   EnsureTabFinishedRestoring(restored_tab);
@@ skipping 49 matching lines @@
   TabContents* tab = chrome::GetTabContentsAt(browser(), 1);
   EnsureTabFinishedRestoring(tab->web_contents());
   ASSERT_EQ(http_url, tab->web_contents()->GetURL());
 
   // Go back, and see if content is as expected.
   GoBack(browser());
   EXPECT_GT(
       ui_test_utils::FindInPage(tab, ASCIIToUTF16("webkit"), true, false, NULL),
       0);
 }