Consolidate scheme checks into an easy GURL method

chrome/browser/extensions/api/dial/dial_device_data.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/api/dial/dial_device_data.h"
 
 #include "chrome/common/extensions/api/dial.h"
 
 namespace extensions {
 
@@ skipping 11 matching lines @@
 const GURL& DialDeviceData::device_description_url() const {
   return device_description_url_;
 }
 
 void DialDeviceData::set_device_description_url(const GURL& url) {
   device_description_url_ = url;
 }
 
 // static
 bool DialDeviceData::IsDeviceDescriptionUrl(const GURL& url) {
-  return url.is_valid() && !url.is_empty() &&
-      (url.SchemeIs("http") || url.SchemeIs("https"));
+  return url.is_valid() && !url.is_empty() && url.SchemeIsHTTPOrHTTPS();
 }
 
 bool DialDeviceData::UpdateFrom(const DialDeviceData& new_data) {
   DCHECK(new_data.device_id() == device_id_);
   DCHECK(new_data.label().empty());
   std::string label_tmp(label_);
   bool updated_api_visible_field =
       (new_data.device_description_url() != device_description_url_) ||
       (new_data.config_id() != config_id_);
   *this = new_data;
   label_ = label_tmp;
   return updated_api_visible_field;
 }
 
 void DialDeviceData::FillDialDevice(api::dial::DialDevice* device) const {
   DCHECK(!device_id_.empty());
   DCHECK(IsDeviceDescriptionUrl(device_description_url_));
   device->device_label = label_;
   device->device_description_url = device_description_url_.spec();
   if (has_config_id())
     device->config_id.reset(new int(config_id_));
 }
 
 }  // namespace extensions