Use a direct include of strings headers in chrome/browser/a*-c*/.

chrome/browser/component_updater/recovery_component_installer.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/component_updater/recovery_component_installer.h"
 
 #include "base/base_paths.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/compiler_specific.h"
 #include "base/file_util.h"
 #include "base/files/file_path.h"
 #include "base/logging.h"
 #include "base/path_service.h"
 #include "base/prefs/pref_registry_simple.h"
 #include "base/prefs/pref_service.h"
 #include "base/process_util.h"
-#include "base/string_util.h"
+#include "base/strings/string_util.h"
 #include "base/values.h"
 #include "chrome/browser/component_updater/component_updater_service.h"
 #include "chrome/common/chrome_version_info.h"
 #include "chrome/common/pref_names.h"
 #include "content/public/browser/browser_thread.h"
 
 using content::BrowserThread;
 
 namespace {
 
@@ skipping 110 matching lines @@
       BrowserThread::UI,
       FROM_HERE,
       base::Bind(&RecoveryRegisterHelper, cus, prefs),
       base::TimeDelta::FromSeconds(6));
 #endif
 }
 
 void RegisterPrefsForRecoveryComponent(PrefRegistrySimple* registry) {
   registry->RegisterStringPref(prefs::kRecoveryComponentVersion, "0.0.0.0");
 }