ChromeOS: Disable ARC when incompatible filesystem is detected.

chrome/browser/chromeos/login/session/user_session_manager.h

Index: chrome/browser/chromeos/login/session/user_session_manager.h
diff --git a/chrome/browser/chromeos/login/session/user_session_manager.h b/chrome/browser/chromeos/login/session/user_session_manager.h
index 3a853e301d5fb0728b8478e4bd53ddef14b7cff6..d83f33c3a413c452e7b06ecd53a2edaed93a3cbb 100644
--- a/chrome/browser/chromeos/login/session/user_session_manager.h
+++ b/chrome/browser/chromeos/login/session/user_session_manager.h
@@ -289,10 +289,12 @@ class UserSessionManager
 
   void StartCrosSession();
   void PrepareProfile();
+  void PrepareProfileAfterFilesystemCheck(bool arc_compatible_filesystem);
 
   // Callback for asynchronous profile creation.
   void OnProfileCreated(const UserContext& user_context,
                         bool is_incognito_profile,
+                        bool arc_compatible_filesystem,
                         Profile* profile,
                         Profile::CreateStatus status);
 
@@ -301,7 +303,8 @@ class UserSessionManager
   // early profile initialization that needs to happen before
   // ProfileManager::DoFinalInit() gets called is done here.
   void InitProfilePreferences(Profile* profile,
-                              const UserContext& user_context);
+                              const UserContext& user_context,
+                              bool arc_compatible_filesystem);
 
   // Callback for Profile::CREATE_STATUS_INITIALIZED profile state.
   // Profile is created, extensions and promo resources are initialized.