Revert of Don't link with audio codecs that we don't use

webrtc/engine_configurations.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.
  */
 
 #ifndef WEBRTC_ENGINE_CONFIGURATIONS_H_
 #define WEBRTC_ENGINE_CONFIGURATIONS_H_
 
 #include "webrtc/typedefs.h"
 
 // ============================================================================
 //                              Voice and Video
 // ============================================================================
 
 // ----------------------------------------------------------------------------
+//  [Voice] Codec settings
+// ----------------------------------------------------------------------------
+
+// iSAC and G722 are not included in the Mozilla build, but in all other builds.
+#ifndef WEBRTC_MOZILLA_BUILD
+#ifdef WEBRTC_ARCH_ARM
+#define WEBRTC_CODEC_ISACFX  // Fix-point iSAC implementation.
+#else
+#define WEBRTC_CODEC_ISAC  // Floating-point iSAC implementation (default).
+#endif  // WEBRTC_ARCH_ARM
+#define WEBRTC_CODEC_G722
+#endif  // !WEBRTC_MOZILLA_BUILD
+
+// iLBC and Redundancy coding are excluded from Chromium and Mozilla
+// builds to reduce binary size.
+#if !defined(WEBRTC_CHROMIUM_BUILD) && !defined(WEBRTC_MOZILLA_BUILD)
+#define WEBRTC_CODEC_ILBC
+#define WEBRTC_CODEC_RED
+#endif  // !WEBRTC_CHROMIUM_BUILD && !WEBRTC_MOZILLA_BUILD
+
+// ----------------------------------------------------------------------------
 //  [Video] Codec settings
 // ----------------------------------------------------------------------------
 
 #define VIDEOCODEC_I420
 #define VIDEOCODEC_VP8
 #define VIDEOCODEC_VP9
 #define VIDEOCODEC_H264
 
 // ============================================================================
 //                                 VoiceEngine
@@ skipping 49 matching lines @@
 
 // ----------------------------------------------------------------------------
 //  VideoEngine Mobile iPhone
 // ----------------------------------------------------------------------------
 
 #if defined(WEBRTC_IOS)
 #define EAGL_RENDERING
 #endif
 
 #endif  // WEBRTC_ENGINE_CONFIGURATIONS_H_