base: Update the include paths of base/string_piece.h to its new location.

base/mac/mac_util.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.
 
 #include "base/mac/mac_util.h"
 
 #import <Cocoa/Cocoa.h>
 #import <IOKit/IOKitLib.h>
 
 #include <errno.h>
 #include <string.h>
 #include <sys/utsname.h>
 #include <sys/xattr.h>
 
 #include "base/files/file_path.h"
 #include "base/logging.h"
 #include "base/mac/bundle_locations.h"
 #include "base/mac/foundation_util.h"
 #include "base/mac/mac_logging.h"
 #include "base/mac/scoped_cftyperef.h"
 #include "base/memory/scoped_generic_obj.h"
 #include "base/memory/scoped_nsobject.h"
-#include "base/string_piece.h"
 #include "base/strings/string_number_conversions.h"
+#include "base/strings/string_piece.h"
 #include "base/strings/sys_string_conversions.h"
 
 namespace base {
 namespace mac {
 
 namespace {
 
 // The current count of outstanding requests for full screen mode from browser
 // windows, plugins, etc.
 int g_full_screen_requests[kNumFullScreenModes] = { 0 };
@@ skipping 631 matching lines @@
           StringPiece(begin + comma_loc + 1, ident.end()), &minor_tmp))
     return false;
   *type = ident.substr(0, number_loc);
   *major = major_tmp;
   *minor = minor_tmp;
   return true;
 }
 
 }  // namespace mac
 }  // namespace base