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

ash/test/test_launcher_delegate.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/test/test_launcher_delegate.h"
 
 #include "ash/launcher/launcher_model.h"
 #include "ash/launcher/launcher_util.h"
 #include "ash/wm/window_util.h"
-#include "base/utf_string_conversions.h"
+#include "base/strings/utf_string_conversions.h"
 #include "grit/ash_resources.h"
 #include "ui/aura/window.h"
 
 namespace ash {
 namespace test {
 
 TestLauncherDelegate* TestLauncherDelegate::instance_ = NULL;
 
 TestLauncherDelegate::TestLauncherDelegate(LauncherModel* model)
     : model_(model) {
@@ skipping 109 matching lines @@
 }
 
 void TestLauncherDelegate::PinAppWithID(const std::string& app_id) {
 }
 
 void TestLauncherDelegate::UnpinAppsWithID(const std::string& app_id) {
 }
 
 }  // namespace test
 }  // namespace ash