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

chrome/browser/ui/cocoa/confirm_bubble_cocoa.mm

 // 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.
 
 #import "chrome/browser/ui/cocoa/confirm_bubble_cocoa.h"
 
-#include "base/string16.h"
+#include "base/strings/string16.h"
 #include "chrome/browser/themes/theme_service.h"
 #import "chrome/browser/ui/cocoa/confirm_bubble_controller.h"
 #include "chrome/browser/ui/confirm_bubble.h"
 #include "chrome/browser/ui/confirm_bubble_model.h"
 #import "third_party/GTM/AppKit/GTMNSBezierPath+RoundRect.h"
 #include "ui/gfx/image/image.h"
 #include "ui/gfx/point.h"
 
 namespace {
 
@@ skipping 276 matching lines @@
 
 - (void)clickCancel {
   [self cancel:self];
 }
 
 - (void)clickLink {
   [self textView:messageLabel_.get() clickedOnLink:nil atIndex:0];
 }
 
 @end