replace OVERRIDE and FINAL with override and final in chrome/browser/[j-q]*

chrome/browser/media_galleries/fileapi/readahead_file_stream_reader.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 CHROME_BROWSER_MEDIA_GALLERIES_FILEAPI_READAHEAD_FILE_STREAM_READER_H_
 #define CHROME_BROWSER_MEDIA_GALLERIES_FILEAPI_READAHEAD_FILE_STREAM_READER_H_
 
 #include <queue>
 
 #include "base/memory/weak_ptr.h"
 #include "net/base/io_buffer.h"
 #include "storage/browser/blob/file_stream_reader.h"
 
 // Wraps a source FileStreamReader with a readahead buffer.
 class ReadaheadFileStreamReader
     : public NON_EXPORTED_BASE(storage::FileStreamReader) {
  public:
   // Takes ownership of |source|.
   explicit ReadaheadFileStreamReader(storage::FileStreamReader* source);
 
   virtual ~ReadaheadFileStreamReader();
 
   // FileStreamReader overrides.
   virtual int Read(net::IOBuffer* buf, int buf_len,
-                   const net::CompletionCallback& callback) OVERRIDE;
+                   const net::CompletionCallback& callback) override;
   virtual int64 GetLength(
-      const net::Int64CompletionCallback& callback) OVERRIDE;
+      const net::Int64CompletionCallback& callback) override;
 
  private:
   // Returns the number of bytes consumed from the internal cache into |sink|.
   // Returns an error code if we are out of cache, hit an error, or hit EOF.
   int FinishReadFromCacheOrStoredError(net::DrainableIOBuffer* sink);
 
   // Reads into a new buffer from the source reader. This calls
   // OnFinishReadFromSource when it completes (either synchronously or
   // asynchronously).
   void ReadFromSourceIfNeeded();
@@ skipping 15 matching lines @@
   // reading and fill the cache.
   scoped_refptr<net::DrainableIOBuffer> pending_sink_buffer_;
   net::CompletionCallback pending_read_callback_;
 
   base::WeakPtrFactory<ReadaheadFileStreamReader> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ReadaheadFileStreamReader);
 };
 
 #endif  // CHROME_BROWSER_MEDIA_GALLERIES_FILEAPI_READAHEAD_FILE_STREAM_READER_H_