iSAC: Make separate AudioEncoder and AudioDecoder objects

webrtc/modules/audio_coding/codecs/isac/isac_common.gypi

Index: webrtc/modules/audio_coding/codecs/isac/isac_common.gypi
diff --git a/webrtc/modules/video_coding/codecs/i420/main/source/i420.gypi b/webrtc/modules/audio_coding/codecs/isac/isac_common.gypi
similarity index 62%
copy from webrtc/modules/video_coding/codecs/i420/main/source/i420.gypi
copy to webrtc/modules/audio_coding/codecs/isac/isac_common.gypi
index 3718e8924d483d6f40863a5b3ba5d4de91a660a3..135ecd27cc912d2f774da830e126ee055e43ad94 100644
--- a/webrtc/modules/video_coding/codecs/i420/main/source/i420.gypi
+++ b/webrtc/modules/audio_coding/codecs/isac/isac_common.gypi
@@ -1,4 +1,4 @@
-# Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
+# Copyright (c) 2015 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
@@ -9,14 +9,13 @@
 {
   'targets': [
     {
-      'target_name': 'webrtc_i420',
+      'target_name': 'isac_common',
       'type': 'static_library',
-      'dependencies': [
-        '<(webrtc_root)/system_wrappers/system_wrappers.gyp:system_wrappers',
-      ],
       'sources': [
-        '../interface/i420.h',
-        'i420.cc',
+        'audio_encoder_isac_t.h',
+        'audio_encoder_isac_t_impl.h',
+        'locked_bandwidth_info.cc',
+        'locked_bandwidth_info.h',
       ],
     },
   ],