Add ArcNotificationManager for new ARC notification

chrome/browser/chromeos/chrome_browser_main_chromeos.cc

Index: chrome/browser/chromeos/chrome_browser_main_chromeos.cc
diff --git a/chrome/browser/chromeos/chrome_browser_main_chromeos.cc b/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
index 3c83155e850f71a8c00651e1626824339a8617eb..00fe142661c6e302f31c2432a67e5b39383fbdcb 100644
--- a/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
+++ b/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
@@ -76,6 +76,7 @@
 #include "chrome/browser/net/chrome_network_delegate.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_manager.h"
+#include "chrome/browser/ui/ash/multi_user/multi_user_util.h"
 #include "chrome/browser/ui/ash/network_connect_delegate_chromeos.h"
 #include "chrome/common/channel_info.h"
 #include "chrome/common/chrome_constants.h"
@@ -638,6 +639,13 @@ void ChromeBrowserMainPartsChromeos::PostProfileInit() {
   // available.
   idle_action_warning_observer_.reset(new IdleActionWarningObserver());
 
+  if (arc::ArcBridgeService::GetEnabled(
+          base::CommandLine::ForCurrentProcess())) {
+    DCHECK(arc_service_manager_);
+    arc_service_manager_->PostProfileInit(
+        multi_user_util::GetAccountIdFromProfile(profile()));
+  }
+
   ChromeBrowserMainPartsLinux::PostProfileInit();
 }