Use a direct include of strings headers in chrome/browser/ui/cocoa/.

chrome/browser/ui/cocoa/bookmarks/bookmark_all_tabs_controller.h

 // Copyright (c) 2010 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.
 
 #ifndef CHROME_BROWSER_UI_COCOA_BOOKMARKS_BOOKMARK_ALL_TABS_CONTROLLER_H_
 #define CHROME_BROWSER_UI_COCOA_BOOKMARKS_BOOKMARK_ALL_TABS_CONTROLLER_H_
 
 #include <utility>
 #include <vector>
 
-#include "base/string16.h"
+#include "base/strings/string16.h"
 #import "chrome/browser/ui/cocoa/bookmarks/bookmark_editor_base_controller.h"
 
 // A list of pairs containing the name and URL associated with each
 // currently active tab in the active browser window.
 typedef std::pair<string16, GURL> ActiveTabNameURLPair;
 typedef std::vector<ActiveTabNameURLPair> ActiveTabsNameURLPairVector;
 
 // A controller for the Bookmark All Tabs sheet which is presented upon
 // selecting the Bookmark All Tabs... menu item shown by the contextual
 // menu in the bookmarks bar.
@@ skipping 16 matching lines @@
 // Initializes the list of all tab names and URLs.  Overridden by unit test
 // to provide canned test data.
 - (void)UpdateActiveTabPairs;
 
 // Provides testing access to tab pairs list.
 - (ActiveTabsNameURLPairVector*)activeTabPairsVector;
 
 @end
 
 #endif  // CHROME_BROWSER_UI_COCOA_BOOKMARKS_BOOKMARK_ALL_TABS_CONTROLLER_H_