Switch MetroPinTabHelper to use WebContentsUserData.

chrome/browser/ui/browser_commands.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 "chrome/browser/ui/browser_commands.h"
 
 #include "base/command_line.h"
 #include "base/metrics/histogram.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/bookmarks/bookmark_editor.h"
@@ skipping 591 matching lines @@
 
 void BookmarkAllTabs(Browser* browser) {
   BookmarkEditor::ShowBookmarkAllTabsDialog(browser);
 }
 
 bool CanBookmarkAllTabs(const Browser* browser) {
   return browser->tab_count() > 1 && CanBookmarkCurrentPage(browser);
 }
 
 void TogglePagePinnedToStartScreen(Browser* browser) {
-  GetActiveTabContents(browser)->metro_pin_tab_helper()->
+  MetroPinTabHelper::FromWebContents(GetActiveWebContents(browser))->
       TogglePinnedToStartScreen();
 }
 
 void SavePage(Browser* browser) {
   content::RecordAction(UserMetricsAction("SavePage"));
   WebContents* current_tab = GetActiveWebContents(browser);
   if (current_tab && current_tab->GetContentsMimeType() == "application/pdf")
     content::RecordAction(UserMetricsAction("PDF.SavePage"));
   current_tab->OnSavePage();
 }
@@ skipping 375 matching lines @@
         BrowserCommandsTabContentsCreator::CreateTabContents(contents);
   }
   app_browser->tab_strip_model()->AppendTabContents(tab_contents, true);
 
   contents->GetMutableRendererPrefs()->can_accept_load_drops = false;
   contents->GetRenderViewHost()->SyncRendererPrefs();
   app_browser->window()->Show();
 }
 
 }  // namespace chrome