ChromeOS: Disable ARC when incompatible filesystem is detected.

chrome/browser/chromeos/arc/arc_session_manager.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/chromeos/arc/arc_session_manager.h"
 
 #include <utility>
 
 #include "ash/common/shelf/shelf_delegate.h"
 #include "ash/common/wm_shell.h"
@@ skipping 105 matching lines @@
   // Note that ArcBackupRestoreEnabled and ArcLocationServiceEnabled prefs have
   // to be off by default, until an explicit gesture from the user to enable
   // them is received. This is crucial in the cases when these prefs transition
   // from a previous managed state to the unmanaged.
   registry->RegisterBooleanPref(prefs::kArcBackupRestoreEnabled, false);
   registry->RegisterBooleanPref(prefs::kArcLocationServiceEnabled, false);
   // This is used to delete the Play user ID if ARC is disabled for an
   // AD-managed device.
   registry->RegisterStringPref(prefs::kArcActiveDirectoryPlayUserId,
                                std::string());
+  registry->RegisterBooleanPref(prefs::kArcCompatibleFilesystemChosen, false);
 }
 
 // static
 bool ArcSessionManager::IsOobeOptInActive() {
   // ARC OOBE OptIn is optional for now. Test if it exists and login host is
   // active.
   if (!user_manager::UserManager::Get()->IsCurrentUserNew())
     return false;
   if (!base::CommandLine::ForCurrentProcess()->HasSwitch(
           chromeos::switches::kEnableArcOOBEOptIn))
@@ skipping 837 matching lines @@
 
 #undef MAP_STATE
 
   // Some compilers report an error even if all values of an enum-class are
   // covered exhaustively in a switch statement.
   NOTREACHED() << "Invalid value " << static_cast<int>(state);
   return os;
 }
 
 }  // namespace arc