Revert of Opus implementation of the AudioEncoderFactoryTemplate API

webrtc/modules/audio_coding/BUILD.gn

 # Copyright (c) 2014 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.
 
 import("../../webrtc.gni")
 import("audio_coding.gni")
@@ skipping 810 matching lines @@
     "codecs/opus/audio_decoder_opus.cc",
     "codecs/opus/audio_decoder_opus.h",
     "codecs/opus/audio_encoder_opus.cc",
     "codecs/opus/audio_encoder_opus.h",
   ]
 
   deps = [
     ":audio_network_adaptor",
     "../..:webrtc_common",
     "../../api/audio_codecs:audio_codecs_api",
-    "../../api/audio_codecs/opus:audio_encoder_opus_config",
     "../../base:protobuf_utils",
     "../../base:rtc_base_approved",
     "../../base:rtc_numerics",
     "../../common_audio",
     "../../system_wrappers",
   ]
   public_deps = [
     ":webrtc_opus_c",
   ]
 
   defines = audio_codec_defines
+  if (rtc_opus_variable_complexity) {
+    defines += [ "WEBRTC_OPUS_VARIABLE_COMPLEXITY=1" ]
+  } else {
+    defines += [ "WEBRTC_OPUS_VARIABLE_COMPLEXITY=0" ]
+  }
 
   if (rtc_build_opus) {
     public_deps += [ rtc_opus_dir ]
   } else if (build_with_mozilla) {
     include_dirs = [ getenv("DIST") + "/include/opus" ]
   }
 }
 
 rtc_source_set("webrtc_opus_c") {
   visibility = [ ":*" ]  # Only targets in this file can depend on this.
@@ skipping 618 matching lines @@
     defines = neteq_defines
 
     deps += audio_coding_deps
     deps += [
       ":ilbc",
       ":isac",
       ":isac_fix",
       ":neteq",
       ":neteq_tools",
       "../../api/audio_codecs:audio_codecs_api",
-      "../../api/audio_codecs/opus:audio_encoder_opus",
       "../../base:protobuf_utils",
       "../../common_audio",
       "../../test:test_main",
       "//testing/gtest",
     ]
 
     data = audio_decoder_unittests_resources
 
     if (is_android) {
       deps += [ "//testing/android/native_test:native_test_native_code" ]
@@ skipping 737 matching lines @@
 # webrtc/api/audio_codecs:builtin_audio_decoder_factory instead.
 # TODO(ossu): Remove this.
 rtc_source_set("builtin_audio_encoder_factory") {
   sources = [
     "codecs/builtin_audio_encoder_factory.h",
   ]
   deps = [
     "../../api/audio_codecs:builtin_audio_encoder_factory",
   ]
 }