Fix ArcBridgeBootstrap race issues.

components/arc/arc_service_manager.cc

Index: components/arc/arc_service_manager.cc
diff --git a/components/arc/arc_service_manager.cc b/components/arc/arc_service_manager.cc
index 21b8f37cf06f0d0a3faf2346b632844d92ca8598..35273f2e9432b6d03f9edaae1ee0a6a7542b1614 100644
--- a/components/arc/arc_service_manager.cc
+++ b/components/arc/arc_service_manager.cc
@@ -9,7 +9,6 @@
 #include "base/memory/ptr_util.h"
 #include "base/sequenced_task_runner.h"
 #include "base/threading/thread_task_runner_handle.h"
-#include "components/arc/arc_bridge_bootstrap.h"
 #include "components/arc/arc_bridge_service.h"
 #include "components/arc/arc_bridge_service_impl.h"
 #include "components/arc/audio/arc_audio_bridge.h"
@@ -51,8 +50,7 @@ ArcServiceManager::ArcServiceManager(
     arc_bridge_service_.reset(g_arc_bridge_service_for_testing);
     g_arc_bridge_service_for_testing = nullptr;
   } else {
-    arc_bridge_service_.reset(new ArcBridgeServiceImpl(
-        ArcBridgeBootstrap::Create()));
+    arc_bridge_service_.reset(new ArcBridgeServiceImpl);
   }
 
   AddService(base::WrapUnique(new ArcAudioBridge(arc_bridge_service())));