Migrate ArcBridgeService::Observer and ArcSession::Observer.

components/arc/arc_bridge_service_impl.cc

 // 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.
 
 #include "components/arc/arc_bridge_service_impl.h"
 
 #include <string>
 #include <utility>
 
 #include "base/command_line.h"
 #include "base/json/json_writer.h"
 #include "base/sequenced_task_runner.h"
 #include "base/sys_info.h"
 #include "base/task_runner_util.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "base/time/time.h"
 #include "chromeos/chromeos_switches.h"
 #include "chromeos/dbus/dbus_method_call_status.h"
 #include "chromeos/dbus/dbus_thread_manager.h"
+#include "components/arc/arc_session.h"
 #include "components/prefs/pref_registry_simple.h"
 #include "components/prefs/pref_service.h"
 
 namespace arc {
 namespace {
 constexpr int64_t kReconnectDelayInSeconds = 5;
 }  // namespace
 
 ArcBridgeServiceImpl::ArcBridgeServiceImpl(
     const scoped_refptr<base::TaskRunner>& blocking_task_runner)
@@ skipping 125 matching lines @@
                                 weak_factory_.GetWeakPtr()),
           base::TimeDelta::FromSeconds(kReconnectDelayInSeconds));
     } else {
       // Restart immediately.
       PrerequisitesChanged();
     }
   }
 }
 
 }  // namespace arc