Remove TabStripModel wrapper use.

chrome/browser/prerender/prefetch_browsertest.cc

Index: chrome/browser/prerender/prefetch_browsertest.cc
diff --git a/chrome/browser/prerender/prefetch_browsertest.cc b/chrome/browser/prerender/prefetch_browsertest.cc
index 4d0d40e0b5e704e7cfcb8ca85989a37cf85ff61b..8ad1ca96d33bc17c3e1d94c715348f0b6fe17485 100644
--- a/chrome/browser/prerender/prefetch_browsertest.cc
+++ b/chrome/browser/prerender/prefetch_browsertest.cc
@@ -5,7 +5,7 @@
 #include "base/command_line.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/common/chrome_switches.h"
 #include "chrome/test/base/in_process_browser_test.h"
 #include "chrome/test/base/ui_test_utils.h"
@@ -54,7 +54,7 @@ IN_PROC_BROWSER_TEST_F(PrefetchBrowserTest, PrefetchOn) {
 
   const string16 expected_title = ASCIIToUTF16("link onload");
   content::TitleWatcher title_watcher(
-      chrome::GetActiveWebContents(browser()),
+      browser()->tab_strip_model()->GetActiveWebContents(),
       expected_title);
   ui_test_utils::NavigateToURL(browser(), url);
 
@@ -67,7 +67,7 @@ IN_PROC_BROWSER_TEST_F(PrefetchBrowserTestNoPrefetching, PrefetchOff) {
 
   const string16 expected_title = ASCIIToUTF16("link onerror");
   content::TitleWatcher title_watcher(
-      chrome::GetActiveWebContents(browser()),
+      browser()->tab_strip_model()->GetActiveWebContents(),
       expected_title);
   ui_test_utils::NavigateToURL(browser(), url);