[CrOS Tether] ProximityAuth WebUI improvement: show the local device's ID.

components/proximity_auth/webui/proximity_auth_webui_handler.h

 // 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.
 
 #ifndef COMPONENTS_PROXIMITY_AUTH_WEBUI_PROXIMITY_AUTH_WEBUI_HANDLER_H_
 #define COMPONENTS_PROXIMITY_AUTH_WEBUI_PROXIMITY_AUTH_WEBUI_HANDLER_H_
 
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "base/values.h"
@@ skipping 102 matching lines @@
   // Cleans up the connection to the selected remote device.
   void CleanUpRemoteDeviceLifeCycle();
 
   // RemoteDeviceLifeCycle::Observer:
   void OnLifeCycleStateChanged(RemoteDeviceLifeCycle::State old_state,
                                RemoteDeviceLifeCycle::State new_state) override;
 
   // MessengerObserver:
   void OnRemoteStatusUpdate(const RemoteStatusUpdate& status_update) override;
 
+  // Returns the truncated device ID of the local device.
+  std::unique_ptr<base::Value> GetTruncatedLocalDeviceId();
+
   // Returns the current enrollment state that can be used as a JSON object.
   std::unique_ptr<base::DictionaryValue> GetEnrollmentStateDictionary();
 
   // Returns the current device sync state that can be used as a JSON object.
   std::unique_ptr<base::DictionaryValue> GetDeviceSyncStateDictionary();
 
   // Returns the current remote devices that can be used as a JSON object.
   std::unique_ptr<base::ListValue> GetRemoteDevicesList();
 
   // The delegate used to fetch dependencies. Must outlive this instance.
@@ skipping 20 matching lines @@
   std::unique_ptr<RemoteStatusUpdate> last_remote_status_update_;
 
   base::WeakPtrFactory<ProximityAuthWebUIHandler> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ProximityAuthWebUIHandler);
 };
 
 }  // namespace proximity_auth
 
 #endif  // COMPONENTS_PROXIMITY_AUTH_WEBUI_PROXIMITY_AUTH_WEBUI_HANDLER_H_