Move tab functions off Browser into browser_tabstrip and browser_tabrestore.

chrome/browser/chrome_main_browsertest.cc

Index: chrome/browser/chrome_main_browsertest.cc
===================================================================
--- chrome/browser/chrome_main_browsertest.cc	(revision 145001)
+++ chrome/browser/chrome_main_browsertest.cc	(working copy)
@@ -12,6 +12,7 @@
 #include "chrome/browser/ui/browser_commands.h"
 #include "chrome/browser/ui/browser_finder.h"
 #include "chrome/browser/ui/browser_list.h"
+#include "chrome/browser/ui/browser_tabstrip.h"
 #include "chrome/common/chrome_notification_types.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/chrome_switches.h"
@@ -56,7 +57,7 @@
   observer.Wait();
 
   GURL url = net::FilePathToFileURL(test_file_path);
-  content::WebContents* tab = browser()->GetActiveWebContents();
+  content::WebContents* tab = chrome::GetActiveWebContents(browser());
   ASSERT_EQ(url, tab->GetController().GetActiveEntry()->GetVirtualURL());
 }