Hook up ProximityAuthSystem in EasyUnlockService.

components/proximity_auth/screenlock_bridge.cc

 // Copyright 2014 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.
 
 #include "components/proximity_auth/screenlock_bridge.h"
 
-#include "base/logging.h"
 #include "base/strings/string16.h"
+#include "components/proximity_auth/logging/logging.h"
 
 #if defined(OS_CHROMEOS)
 #include "chromeos/dbus/dbus_thread_manager.h"
 #include "chromeos/dbus/session_manager_client.h"
 #endif
 
 namespace proximity_auth {
 namespace {
 
 base::LazyInstance<ScreenlockBridge> g_screenlock_bridge_instance =
@@ skipping 105 matching lines @@
     return;
 
   // TODO(isherman): If |lock_handler| is null, then |lock_handler_| might have
   // been freed. Cache the screen type rather than querying it below.
   LockHandler::ScreenType screen_type;
   if (lock_handler_)
     screen_type = lock_handler_->GetScreenType();
   else
     screen_type = lock_handler->GetScreenType();
 
+  focused_user_id_ = std::string();
   lock_handler_ = lock_handler;
   if (lock_handler_)
     FOR_EACH_OBSERVER(Observer, observers_, OnScreenDidLock(screen_type));
   else
     FOR_EACH_OBSERVER(Observer, observers_, OnScreenDidUnlock(screen_type));
 }
 
 void ScreenlockBridge::SetFocusedUser(const std::string& user_id) {
   if (user_id == focused_user_id_)
     return;
+  PA_LOG(INFO) << "Focused user changed to " << user_id;
   focused_user_id_ = user_id;
   FOR_EACH_OBSERVER(Observer, observers_, OnFocusedUserChanged(user_id));
 }
 
 bool ScreenlockBridge::IsLocked() const {
   return lock_handler_ != nullptr;
 }
 
 void ScreenlockBridge::Lock() {
 #if defined(OS_CHROMEOS)
@@ skipping 18 matching lines @@
   observers_.RemoveObserver(observer);
 }
 
 ScreenlockBridge::ScreenlockBridge() : lock_handler_(nullptr) {
 }
 
 ScreenlockBridge::~ScreenlockBridge() {
 }
 
 }  // namespace proximity_auth