Remove the preprocessor symbol WEBRTC_CODEC_PCM16 (it was always defined)

webrtc/modules/audio_coding/main/acm2/acm_codec_database.h

 /*
  *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 20 matching lines @@
   // be the same as when creating the database in acm_codec_database.cc.
   enum {
     kNone = -1
 #if (defined(WEBRTC_CODEC_ISAC) || defined(WEBRTC_CODEC_ISACFX))
     , kISAC
 # if (defined(WEBRTC_CODEC_ISAC))
     , kISACSWB
     , kISACFB
 # endif
 #endif
-#ifdef WEBRTC_CODEC_PCM16
     // Mono
     , kPCM16B
     , kPCM16Bwb
     , kPCM16Bswb32kHz
     // Stereo
     , kPCM16B_2ch
     , kPCM16Bwb_2ch
     , kPCM16Bswb32kHz_2ch
-#endif
     // Mono
     , kPCMU
     , kPCMA
     // Stereo
     , kPCMU_2ch
     , kPCMA_2ch
 #ifdef WEBRTC_CODEC_ILBC
     , kILBC
 #endif
 #ifdef WEBRTC_CODEC_G722
@@ skipping 22 matching lines @@
   };
 
   // Set unsupported codecs to -1
 #ifndef WEBRTC_CODEC_ISAC
   enum {kISACSWB = -1};
   enum {kISACFB = -1};
 # ifndef WEBRTC_CODEC_ISACFX
   enum {kISAC = -1};
 # endif
 #endif
-#ifndef WEBRTC_CODEC_PCM16
-  // Mono
-  enum {kPCM16B = -1};
-  enum {kPCM16Bwb = -1};
-  enum {kPCM16Bswb32kHz = -1};
-  // Stereo
-  enum {kPCM16B_2ch = -1};
-  enum {kPCM16Bwb_2ch = -1};
-  enum {kPCM16Bswb32kHz_2ch = -1};
-#endif
   // 48 kHz not supported, always set to -1.
   enum {kPCM16Bswb48kHz = -1};
 #ifndef WEBRTC_CODEC_ILBC
   enum {kILBC = -1};
 #endif
 #ifndef WEBRTC_CODEC_G722
   // Mono
   enum {kG722 = -1};
   // Stereo
   enum {kG722_2ch = -1};
@@ skipping 128 matching lines @@
   static const CodecInst database_[kMaxNumCodecs];
   static const CodecSettings codec_settings_[kMaxNumCodecs];
   static const NetEqDecoder neteq_decoders_[kMaxNumCodecs];
 };
 
 }  // namespace acm2
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_AUDIO_CODING_MAIN_ACM2_ACM_CODEC_DATABASE_H_