Add RemoteDeviceLoader to create RemoteDevice from CryptAuth data.

components/proximity_auth/remote_device.h

Index: components/proximity_auth/remote_device.h
diff --git a/components/proximity_auth/remote_device.h b/components/proximity_auth/remote_device.h
index 582f2f730f264ae24ecb936f2d737f1ba37138bc..96fa7b60d066499dc9ea7e5c97340145482ddd18 100644
--- a/components/proximity_auth/remote_device.h
+++ b/components/proximity_auth/remote_device.h
@@ -11,13 +11,16 @@ namespace proximity_auth {
 
 struct RemoteDevice {
  public:
+  std::string user_id;
   std::string name;
   std::string public_key;
   std::string bluetooth_address;
   std::string persistent_symmetric_key;
+  std::string sign_in_challenge;

[sacomoto, 2015/09/24 12:41:59]

nit: You could already add the flag for BLE devices here.

[Tim Song, 2015/09/26 02:08:14]

Done.

 
   RemoteDevice();
-  RemoteDevice(const std::string& name,
+  RemoteDevice(const std::string& user_id,
+               const std::string& name,
                const std::string& public_key,
                const std::string& bluetooth_address,
                const std::string& persistent_symmetric_key);