Move TabStripModelDelegate off Browser into its own class.

chrome/browser/browser_focus_uitest.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 "build/build_config.h"
 
 #include "base/bind.h"
 #include "base/file_util.h"
 #include "base/format_macros.h"
 #include "base/message_loop.h"
@@ skipping 262 matching lines @@
   ui_test_utils::HideNativeWindow(window);
   ASSERT_TRUE(ui_test_utils::ShowAndFocusNativeWindow(window));
   ASSERT_TRUE(IsViewFocused(location_bar_focus_view_id_));
 
   // The rest of this test does not make sense on Linux because the behavior
   // of Activate() is not well defined and can vary by window manager.
 #if defined(OS_WIN)
   // Open a new browser window.
   Browser* browser2 = Browser::Create(browser()->profile());
   ASSERT_TRUE(browser2);
-  browser2->tab_strip_model()->delegate()->AddBlankTab(true);
+  chrome::AddBlankTab(browser2, true);
   browser2->window()->Show();
   ui_test_utils::NavigateToURL(browser2, url);
 
   gfx::NativeWindow window2 = browser2->window()->GetNativeWindow();
   BrowserView* browser_view2 =
       BrowserView::GetBrowserViewForBrowser(browser2);
   ASSERT_TRUE(browser_view2);
   const views::Widget* widget2 =
       views::Widget::GetWidgetForNativeWindow(window2);
   ASSERT_TRUE(widget2);
@@ skipping 133 matching lines @@
 // Background window does not steal focus.
 // Flaky, http://crbug.com/62538.
 IN_PROC_BROWSER_TEST_F(BrowserFocusTest,
                        DISABLED_BackgroundBrowserDontStealFocus) {
   ASSERT_TRUE(ui_test_utils::BringBrowserWindowToFront(browser()));
   ASSERT_TRUE(test_server()->Start());
 
   // Open a new browser window.
   Browser* browser2 = Browser::Create(browser()->profile());
   ASSERT_TRUE(browser2);
-  browser2->tab_strip_model()->delegate()->AddBlankTab(true);
+  chrome::AddBlankTab(browser2, true);
   browser2->window()->Show();
 
   Browser* focused_browser = NULL;
   Browser* unfocused_browser = NULL;
 #if defined(USE_X11)
   // On X11, calling Activate() is not guaranteed to move focus, so we have
   // to figure out which browser does have focus.
   if (browser2->window()->IsActive()) {
     focused_browser = browser2;
     unfocused_browser = browser();
@@ skipping 479 matching lines @@
     chrome::Reload(browser(), CURRENT_TAB);
     observer.Wait();
   }
 
   // Focus should now be on the tab contents.
   chrome::ShowDownloads(browser());
   ASSERT_TRUE(IsViewFocused(VIEW_ID_TAB_CONTAINER));
 }
 
 }  // namespace