Cast: Adding helper crypto classes

media/cast/audio_sender/audio_sender.gypi

 # Copyright 2013 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.
 
 {
   'targets': [
     {
       'target_name': 'audio_sender',
       'type': 'static_library',
       'include_dirs': [
         '<(DEPTH)/',
         '<(DEPTH)/third_party/',
       ],
       'sources': [
         'audio_encoder.h',
         'audio_encoder.cc',
         'audio_sender.h',
         'audio_sender.cc',
       ], # source
       'dependencies': [
-        '<(DEPTH)/crypto/crypto.gyp:crypto',
         '<(DEPTH)/media/media.gyp:media',
         '<(DEPTH)/media/media.gyp:shared_memory_support',
         '<(DEPTH)/media/cast/rtcp/rtcp.gyp:cast_rtcp',
         '<(DEPTH)/media/cast/transport/cast_transport.gyp:cast_transport',
         '<(DEPTH)/third_party/opus/opus.gyp:opus',
       ],
     },
   ],
 }