Bind ContentVerifer::VerifyFailed as OnceCallback.

extensions/browser/content_verify_job.h

 // Copyright 2014 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 EXTENSIONS_BROWSER_CONTENT_VERIFY_JOB_H_
 #define EXTENSIONS_BROWSER_CONTENT_VERIFY_JOB_H_
 
 #include <stdint.h>
 
 #include <memory>
@@ skipping 31 matching lines @@
     MISSING_ALL_HASHES,
 
     // Failed because this file wasn't found in the list of expected hashes.
     NO_HASHES_FOR_FILE,
 
     // Some of the content read did not match the expected hash.
     HASH_MISMATCH,
 
     FAILURE_REASON_MAX
   };
-  typedef base::Callback<void(FailureReason)> FailureCallback;
+  using FailureCallback = base::OnceCallback<void(FailureReason)>;
 
   // The |failure_callback| will be called at most once if there was a failure.
   ContentVerifyJob(ContentHashReader* hash_reader,
-                   const FailureCallback& failure_callback);
+                   FailureCallback failure_callback);
 
   // This begins the process of getting expected hashes, so it should be called
   // as early as possible.
   void Start();
 
   // Call this to add more bytes to verify. If at any point the read bytes
   // don't match the expected hashes, this will dispatch the failure
   // callback. The failure callback will only be run once even if more bytes
   // are read. Make sure to call DoneReading so that any final bytes that were
   // read that didn't align exactly on a block size boundary get their hash
@@ skipping 81 matching lines @@
 
   // For ensuring methods on called on the right thread.
   base::ThreadChecker thread_checker_;
 
   DISALLOW_COPY_AND_ASSIGN(ContentVerifyJob);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_CONTENT_VERIFY_JOB_H_