arc-bridge: Start ArcBridgeService on session start

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 7f57fa40c20c8a2f2a6488dfaad09c78114a3fc0..62cb2adeba8211225c16a2177bca128a641e34f3 100644
--- a/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
+++ b/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
@@ -108,6 +108,7 @@
 #include "chromeos/network/portal_detector/network_portal_detector_stub.h"
 #include "chromeos/system/statistics_provider.h"
 #include "chromeos/tpm/tpm_token_loader.h"
+#include "components/arc/arc_bridge_service.h"
 #include "components/browser_sync/common/browser_sync_switches.h"
 #include "components/device_event_log/device_event_log.h"
 #include "components/metrics/metrics_service.h"
@@ -386,6 +387,13 @@ void ChromeBrowserMainPartsChromeos::PreMainMessageLoopRun() {
 
   wake_on_wifi_manager_.reset(new WakeOnWifiManager());
 
+  arc_bridge_service_.reset(new arc::ArcBridgeService(
+      content::BrowserThread::GetMessageLoopProxyForThread(
+          content::BrowserThread::IO),
+      content::BrowserThread::GetMessageLoopProxyForThread(
+          content::BrowserThread::FILE)));
+  arc_bridge_service_->DetectAvailability();
+
   ChromeBrowserMainPartsLinux::PreMainMessageLoopRun();
 }
 
@@ -697,6 +705,9 @@ void ChromeBrowserMainPartsChromeos::PostBrowserStart() {
 void ChromeBrowserMainPartsChromeos::PostMainMessageLoopRun() {
   BootTimesRecorder::Get()->AddLogoutTimeMarker("UIMessageLoopEnded", true);
 
+  // Stop the currently running ARC instance, if any.
+  arc_bridge_service_->Shutdown();
+
   // Destroy the application name notifier for Kiosk mode.
   KioskModeIdleAppNameNotification::Shutdown();