Use a direct include of utf_string_conversions.h in android_webview/, apps/, ash/, base/.

ash/system/monitor/tray_monitor.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 "ash/system/monitor/tray_monitor.h"
 
 #include "ash/system/tray/tray_item_view.h"
 #include "base/process_util.h"
 #include "base/stringprintf.h"
-#include "base/utf_string_conversions.h"
+#include "base/strings/utf_string_conversions.h"
 #include "content/public/browser/gpu_data_manager.h"
 #include "ui/base/text/bytes_formatting.h"
+#include "ui/views/border.h"
 #include "ui/views/controls/label.h"
-#include "ui/views/border.h"
 
 namespace {
 const int kRefreshTimeoutMs = 1000;
 }
 
 namespace ash {
 namespace internal {
 
 TrayMonitor::TrayMonitor(SystemTray* system_tray)
     : SystemTrayItem(system_tray),
@@ skipping 63 matching lines @@
                                UTF16ToUTF8(private_size).c_str(),
                                UTF16ToUTF8(shared_size).c_str());
   label_->SetText(UTF8ToUTF16(output));
   refresh_timer_.Start(FROM_HERE,
       base::TimeDelta::FromMilliseconds(kRefreshTimeoutMs),
       this, &TrayMonitor::OnTimer);
 }
 
 }  // namespace internal
 }  // namespace ash