Remove TabStripModel wrapper use.

chrome/browser/history/multipart_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/file_util.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/ui/browser.h"
-#include "chrome/browser/ui/browser_tabstrip.h"
+#include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/test/base/in_process_browser_test.h"
 #include "chrome/test/base/ui_test_utils.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "content/public/common/frame_navigate_params.h"
 #include "net/test/test_server.h"
 
 class MultipartResponseTest : public InProcessBrowserTest,
                               public content::WebContentsObserver {
  public:
@@ skipping 10 matching lines @@
   int did_navigate_any_frame_count_;
   int update_history_count_;
 };
 
 // Disabled:  http://crbug.com/136310
 IN_PROC_BROWSER_TEST_F(MultipartResponseTest, DISABLED_SingleVisit) {
   // Make sure that visiting a multipart/x-mixed-replace site only
   // creates one entry in the visits table.
   ASSERT_TRUE(test_server()->Start());
 
-  Observe(chrome::GetActiveWebContents(browser()));
+  Observe(browser()->tab_strip_model()->GetActiveWebContents());
   ui_test_utils::NavigateToURL(browser(), test_server()->GetURL("multipart"));
 
   EXPECT_EQ(ASCIIToUTF16("page 9"),
-            chrome::GetActiveWebContents(browser())->GetTitle());
+            browser()->tab_strip_model()->GetActiveWebContents()->GetTitle());
   EXPECT_EQ(1, update_history_count_);
   EXPECT_GT(did_navigate_any_frame_count_, update_history_count_);
 }