[headless] Use version for product name and user agent.

headless/lib/headless_content_client.cc

 // Copyright 2015 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 "headless/lib/headless_content_client.h"
 
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/resource/resource_bundle.h"
 
 namespace headless {
 
 HeadlessContentClient::HeadlessContentClient(HeadlessBrowser::Options* options)
     : options_(options) {}
 
 HeadlessContentClient::~HeadlessContentClient() {}
 
+std::string HeadlessContentClient::GetProduct() const {
+  return options_->product_name_and_version;
+}
+
 std::string HeadlessContentClient::GetUserAgent() const {
   return options_->user_agent;
 }
 
 base::string16 HeadlessContentClient::GetLocalizedString(int message_id) const {
   return l10n_util::GetStringUTF16(message_id);
 }
 
 base::StringPiece HeadlessContentClient::GetDataResource(
     int resource_id,
     ui::ScaleFactor scale_factor) const {
   return ResourceBundle::GetSharedInstance().GetRawDataResourceForScale(
       resource_id, scale_factor);
 }
 
 base::RefCountedMemory* HeadlessContentClient::GetDataResourceBytes(
     int resource_id) const {
   return ResourceBundle::GetSharedInstance().LoadDataResourceBytes(resource_id);
 }
 
 gfx::Image& HeadlessContentClient::GetNativeImageNamed(int resource_id) const {
   return ResourceBundle::GetSharedInstance().GetNativeImageNamed(resource_id);
 }
 
 }  // namespace headless