Encrypted Media: Replace DecryptorClient with key event callbacks.

media/media.gyp

 # Copyright (c) 2012 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.
 
 {
   'variables': {
     'chromium_code': 1,
     # Override to dynamically link the PulseAudio library.
     'use_pulseaudio%': 0,
     # Override to dynamically link the cras (ChromeOS audio) library.
@@ skipping 191 matching lines @@
         'base/data_buffer.cc',
         'base/data_buffer.h',
         'base/data_source.cc',
         'base/data_source.h',
         'base/decoder_buffer.cc',
         'base/decoder_buffer.h',
         'base/decoder_buffer_queue.cc',
         'base/decoder_buffer_queue.h',
         'base/decryptor.cc',
         'base/decryptor.h',
-        'base/decryptor_client.h',
         'base/decrypt_config.cc',
         'base/decrypt_config.h',
         'base/demuxer.cc',
         'base/demuxer.h',
         'base/demuxer_stream.cc',
         'base/demuxer_stream.h',
         'base/djb2.cc',
         'base/djb2.h',
         'base/filter_collection.cc',
         'base/filter_collection.h',
@@ skipping 1144 matching lines @@
             'media',
           ],
           'sources': [
             'tools/media_bench/media_bench.cc',
           ],
         },
       ],
     }]
   ],
 }