[chrome.dial] Adds chrome.dial.fetchDeviceDecription API.

chrome/browser/extensions/api/dial/dial_device_data.h

 // 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.
 
 #ifndef CHROME_BROWSER_EXTENSIONS_API_DIAL_DIAL_DEVICE_DATA_H_
 #define CHROME_BROWSER_EXTENSIONS_API_DIAL_DIAL_DEVICE_DATA_H_
 
 #include <string>
 #include <vector>
 
 #include "base/time/time.h"
 #include "base/values.h"
 #include "url/gurl.h"
 
 namespace extensions {
 
 namespace api {
 namespace dial {
 struct DialDevice;
+}  // namespace dial
 }  // namespace api
-}  // namespace dial
 
 // Dial device information that is used within the DialService and Registry on
 // the IO thread. It is updated as new information arrives and a list of
 // DialDeviceData is copied and sent to event listeners on the UI thread.
 class DialDeviceData {
  public:
   DialDeviceData();
   DialDeviceData(const std::string& device_id,
                  const GURL& device_description_url,
                  const base::Time& response_time);
@@ skipping 55 matching lines @@
   // The time that the most recent response was received.
   base::Time response_time_;
 
   // Optional (-1 means unset).
   int max_age_;
 
   // Optional (-1 means unset).
   int config_id_;
 };
 
+class DialDeviceDescription {
+ public:
+  DialDeviceDescription() = default;
+  DialDeviceDescription(const std::string& device_description,
+                        const GURL& app_url);
+
+  ~DialDeviceDescription() = default;
+
+  std::string device_description;
+  GURL app_url;
+};
+
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_DIAL_DIAL_DEVICE_DATA_H_