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

chrome/browser/ui/cocoa/screen_capture_notification_ui_cocoa.mm

 // Copyright 2013 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 <Cocoa/Cocoa.h>
 
 #include "chrome/browser/ui/cocoa/screen_capture_notification_ui_cocoa.h"
 
 #include "base/compiler_specific.h"
 #include "base/i18n/rtl.h"
 #include "base/mac/bundle_locations.h"
-#include "base/string_util.h"
+#include "base/strings/string_util.h"
 #include "base/strings/sys_string_conversions.h"
 #include "grit/generated_resources.h"
 #include "ui/base/l10n/l10n_util.h"
 
 @interface ScreenCaptureNotificationController()
 - (void)Hide;
 @end
 
 class ScreenCaptureNotificationUICocoa : public ScreenCaptureNotificationUI {
  public:
@@ skipping 225 matching lines @@
   path = [NSBezierPath bezierPath];
   [path moveToPoint:top];
   [path lineToPoint:bottom];
   [light setStroke];
   [path stroke];
 
   [context setShouldAntialias:alias];
 }
 
 @end