Hook up ProximityAuthSystem in EasyUnlockService.

components/proximity_auth/remote_device_life_cycle_impl.cc

Index: components/proximity_auth/remote_device_life_cycle_impl.cc
diff --git a/components/proximity_auth/remote_device_life_cycle_impl.cc b/components/proximity_auth/remote_device_life_cycle_impl.cc
index a9d2538b0eda6321cd2ac804bbf49dd8733adcff..f7c532be147791803074db618631afc8f4427967 100644
--- a/components/proximity_auth/remote_device_life_cycle_impl.cc
+++ b/components/proximity_auth/remote_device_life_cycle_impl.cc
@@ -43,6 +43,7 @@ RemoteDeviceLifeCycleImpl::RemoteDeviceLifeCycleImpl(
     : remote_device_(remote_device),
       proximity_auth_client_(proximity_auth_client),
       state_(RemoteDeviceLifeCycle::State::STOPPED),
+      observers_(base::ObserverList<Observer>::NOTIFY_EXISTING_ONLY),
       bluetooth_throttler_(new BluetoothThrottlerImpl(
           make_scoped_ptr(new base::DefaultTickClock()))),
       weak_ptr_factory_(this) {}
@@ -114,6 +115,7 @@ void RemoteDeviceLifeCycleImpl::FindConnection() {
 void RemoteDeviceLifeCycleImpl::OnConnectionFound(
     scoped_ptr<Connection> connection) {
   DCHECK(state_ == RemoteDeviceLifeCycle::State::FINDING_CONNECTION);
+  connection_finder_.reset();
   connection_ = connection.Pass();
   authenticator_ = CreateAuthenticator();
   authenticator_->Authenticate(
@@ -126,6 +128,7 @@ void RemoteDeviceLifeCycleImpl::OnAuthenticationResult(
     Authenticator::Result result,
     scoped_ptr<SecureContext> secure_context) {
   DCHECK(state_ == RemoteDeviceLifeCycle::State::AUTHENTICATING);
+  authenticator_.reset();
   if (result != Authenticator::Result::SUCCESS) {
     PA_LOG(WARNING) << "Waiting " << kAuthenticationRecoveryTimeSeconds
                     << " seconds to retry after authentication failure.";
@@ -139,9 +142,8 @@ void RemoteDeviceLifeCycleImpl::OnAuthenticationResult(
   }
 
   // Create the MessengerImpl asynchronously. |messenger_| registers itself as
-  // an
-  // observer of |connection_|, so creating it synchronously would
-  // trigger |OnSendComplete()| as an observer call for |messenger_|.
+  // an observer of |connection_|, so creating it synchronously would trigger
+  // |OnSendComplete()| as an observer call for |messenger_|.

[sacomoto, 2015/09/29 20:58:33]

nit: s/OnSendComplete/OnSendCompleted/.

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

Done.

   secure_context_ = secure_context.Pass();
   base::ThreadTaskRunnerHandle::Get()->PostTask(
       FROM_HERE, base::Bind(&RemoteDeviceLifeCycleImpl::CreateMessenger,
@@ -160,6 +162,7 @@ void RemoteDeviceLifeCycleImpl::CreateMessenger() {
 
 void RemoteDeviceLifeCycleImpl::OnDisconnected() {
   DCHECK(state_ == RemoteDeviceLifeCycle::State::SECURE_CHANNEL_ESTABLISHED);
+  messenger_.reset();
   FindConnection();
 }