Delete a TODO comment that had already been addressed.

chrome/browser/chromeos/arc/arc_util.h

 // Copyright 2017 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.
 
 #ifndef CHROME_BROWSER_CHROMEOS_ARC_ARC_UTIL_H_
 #define CHROME_BROWSER_CHROMEOS_ARC_ARC_UTIL_H_
 
 #include <stdint.h>
 
 #include "base/callback_forward.h"
@@ skipping 14 matching lines @@
 namespace arc {
 
 // Values to be stored in the local state preference to keep track of the
 // filesystem encryption migration status.
 enum FileSystemCompatibilityState : int32_t {
   // No migiration has happend, user keeps using the old file system.
   kFileSystemIncompatible = 0,
   // Migration has happend. New filesystem is in use.
   kFileSystemCompatible = 1,
   // Migration has happend, and a notification about the fact was already shown.
-  // TODO(kinaba): This value isn't yet used until crbug.com/711095 is done.
   kFileSystemCompatibleAndNotified = 2,
 
   // Existing code assumes that kFileSystemIncompatible is the only state
   // representing incompatibility and other values are all variants of
   // "compatible" state. Be careful in the case adding a new enum value.
 };
 
 // Returns true if ARC is allowed to run for the given profile.
 // Otherwise, returns false, e.g. if the Profile is not for the primary user,
 // ARC is not available on the device, it is in the flow to set up managed
@@ skipping 58 matching lines @@
 // for the profile is compatible with ARC, when necessary. After it's done (or
 // skipped), |callback| is run either synchronously or asynchronously.
 void UpdateArcFileSystemCompatibilityPrefIfNeeded(
     const AccountId& account_id,
     const base::FilePath& profile_path,
     const base::Closure& callback);
 
 }  // namespace arc
 
 #endif  // CHROME_BROWSER_CHROMEOS_ARC_ARC_UTIL_H_