Hook up ProximityAuthSystem in EasyUnlockService.

chrome/browser/signin/easy_unlock_service_signin_chromeos.cc

Index: chrome/browser/signin/easy_unlock_service_signin_chromeos.cc
diff --git a/chrome/browser/signin/easy_unlock_service_signin_chromeos.cc b/chrome/browser/signin/easy_unlock_service_signin_chromeos.cc
index e30ee9298818ddfda639a3aeb4211d0dcbf57893..050d072c3779d733146eb85fe3a26750e1506f7a 100644
--- a/chrome/browser/signin/easy_unlock_service_signin_chromeos.cc
+++ b/chrome/browser/signin/easy_unlock_service_signin_chromeos.cc
@@ -18,6 +18,9 @@
 #include "chrome/browser/signin/easy_unlock_metrics.h"
 #include "chromeos/login/auth/user_context.h"
 #include "chromeos/tpm/tpm_token_loader.h"
+#include "components/proximity_auth/cryptauth/base64url.h"
+#include "components/proximity_auth/logging/logging.h"
+#include "components/proximity_auth/remote_device.h"
 
 namespace {
 
@@ -253,7 +256,7 @@ void EasyUnlockServiceSignin::OnWillFinalizeUnlock(bool success) {
   NOTREACHED();
 }
 
-void EasyUnlockServiceSignin::OnSuspendDone() {
+void EasyUnlockServiceSignin::OnSuspendDoneInternal() {
   // Ignored.
 }
 
@@ -377,6 +380,26 @@ void EasyUnlockServiceSignin::OnUserDataLoaded(
   // that it has to refresh it's user data.
   if (user_id == user_id_)
     NotifyUserUpdated();
+
+  if (user_id != user_id || devices.empty())
+    return;
+
+  // TODO(tengs): Currently, ProximityAuthSystem only supports one device. Once
+  // multiple devices are supported, we need to load all devices.
+  std::string decoded_public_key, decoded_psk, decoded_challenge;
+  proximity_auth::Base64UrlDecode(devices[0].public_key, &decoded_public_key);
+  proximity_auth::Base64UrlDecode(devices[0].psk, &decoded_psk);
+  proximity_auth::Base64UrlDecode(devices[0].challenge, &decoded_challenge);
+  proximity_auth::RemoteDevice remote_device(
+      user_id, std::string(), decoded_public_key, devices[0].bluetooth_address,
+      decoded_psk);
+  remote_device.sign_in_challenge = decoded_challenge;
+  PA_LOG(ERROR) << "Loaded Remote Device:\n"

[sacomoto, 2015/09/29 18:45:57]

nit: s/ERROR/INFO/.

[Tim Song, 2015/09/30 00:05:04]

Done.

+                << "  user id: " << remote_device.user_id << "\n"
+                << "  name: " << remote_device.name << "\n"
+                << "  public key" << devices[0].public_key << "\n"
+                << "  bt_addr:" << remote_device.bluetooth_address;
+  OnRemoteDeviceChanged(&remote_device);
 }
 
 const EasyUnlockServiceSignin::UserData*