Use a direct include of utf_string_conversions.h in chrome/browser/, part 2.

chrome/browser/extensions/requirements_checker.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/extensions/requirements_checker.h"
 
 #include "base/bind.h"
-#include "base/utf_string_conversions.h"
+#include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/gpu/gpu_feature_checker.h"
 #include "chrome/common/extensions/extension_manifest_constants.h"
 #include "chrome/common/extensions/extension.h"
 #include "chrome/common/extensions/manifest.h"
 #include "chrome/common/extensions/manifest_handlers/requirements_handler.h"
 #include "content/public/browser/browser_thread.h"
 #include "gpu/config/gpu_feature_type.h"
 #include "grit/generated_resources.h"
 #include "ui/base/l10n/l10n_util.h"
 
@@ skipping 82 matching lines @@
   if (--pending_requirement_checks_ == 0) {
     content::BrowserThread::PostTask(content::BrowserThread::UI, FROM_HERE,
                                      base::Bind(callback_, errors_));
     // Reset the callback so any ref-counted bound parameters will get released.
     callback_.Reset();
     errors_.clear();
   }
 }
 
 }  // namespace extensions