Remove VoEAudioProcessing interface.

webrtc/voice_engine/BUILD.gn

Index: webrtc/voice_engine/BUILD.gn
diff --git a/webrtc/voice_engine/BUILD.gn b/webrtc/voice_engine/BUILD.gn
index 2d40b2c72d4e23ab31251b5b84700441addb4280..38f0212e4f8aa3f0e78188f237db0488c4f71dcf 100644
--- a/webrtc/voice_engine/BUILD.gn
+++ b/webrtc/voice_engine/BUILD.gn
@@ -74,7 +74,6 @@ rtc_static_library("voice_engine") {
     "channel_manager.h",
     "channel_proxy.cc",
     "channel_proxy.h",
-    "include/voe_audio_processing.h",
     "include/voe_base.h",
     "include/voe_codec.h",
     "include/voe_errors.h",
@@ -96,8 +95,6 @@ rtc_static_library("voice_engine") {
     "transport_feedback_packet_loss_tracker.h",
     "utility.cc",
     "utility.h",
-    "voe_audio_processing_impl.cc",
-    "voe_audio_processing_impl.h",
     "voe_base_impl.cc",
     "voe_base_impl.h",
     "voe_codec_impl.cc",
@@ -209,7 +206,6 @@ if (rtc_include_tests) {
       "file_player_unittests.cc",
       "transport_feedback_packet_loss_tracker_unittest.cc",
       "utility_unittest.cc",
-      "voe_audio_processing_unittest.cc",
       "voe_base_unittest.cc",
       "voe_codec_unittest.cc",
       "voe_network_unittest.cc",
@@ -262,8 +258,6 @@ if (rtc_include_tests) {
 
       sources = [
         "test/auto_test/automated_mode.cc",
-        "test/auto_test/extended/agc_config_test.cc",
-        "test/auto_test/extended/ec_metrics_test.cc",
         "test/auto_test/fakes/conference_transport.cc",
         "test/auto_test/fakes/conference_transport.h",
         "test/auto_test/fakes/loudest_filter.cc",
@@ -276,7 +270,6 @@ if (rtc_include_tests) {
         "test/auto_test/fixtures/before_initialization_fixture.h",
         "test/auto_test/fixtures/before_streaming_fixture.cc",
         "test/auto_test/fixtures/before_streaming_fixture.h",
-        "test/auto_test/standard/audio_processing_test.cc",
         "test/auto_test/standard/codec_before_streaming_test.cc",
         "test/auto_test/standard/codec_test.cc",
         "test/auto_test/standard/dtmf_test.cc",