Migrate --enable-arc and --arc-available part 1.

chrome/browser/chromeos/arc/arc_session_manager.h

Index: chrome/browser/chromeos/arc/arc_session_manager.h
diff --git a/chrome/browser/chromeos/arc/arc_session_manager.h b/chrome/browser/chromeos/arc/arc_session_manager.h
index 20ef5ab3104ee0b42a0e0d9229b490414b3d85fe..8845494365a41e142c596515cbd4e6270d6c73a3 100644
--- a/chrome/browser/chromeos/arc/arc_session_manager.h
+++ b/chrome/browser/chromeos/arc/arc_session_manager.h
@@ -135,6 +135,9 @@ class ArcSessionManager : public ArcSessionObserver,
   // Returns true if Arc is allowed to run for the given profile.
   static bool IsAllowedForProfile(const Profile* profile);
 
+  // Disallows ARC for all profiles for testing.
+  static void DisallowForTesting();
+
   // Returns true if ARC should run under Kiosk mode.
   static bool IsArcKioskMode();