audioproc_f with fake microphone.

webrtc/modules/audio_processing/BUILD.gn

Index: webrtc/modules/audio_processing/BUILD.gn
diff --git a/webrtc/modules/audio_processing/BUILD.gn b/webrtc/modules/audio_processing/BUILD.gn
index 93ca85b3034034744d5aed736033725fd151c519..46a2d2dc7168204fdcdb5d7e8a880ca62ef8df86 100644
--- a/webrtc/modules/audio_processing/BUILD.gn
+++ b/webrtc/modules/audio_processing/BUILD.gn
@@ -508,6 +508,7 @@ if (rtc_include_tests) {
       "config_unittest.cc",
       "echo_cancellation_impl_unittest.cc",
       "splitting_filter_unittest.cc",
+      "test/fake_recording_device_unittest.cc",
       "transient/dyadic_decimator_unittest.cc",
       "transient/file_utils.cc",
       "transient/file_utils.h",
@@ -532,6 +533,7 @@ if (rtc_include_tests) {
     deps = [
       ":audio_processing",
       ":audioproc_test_utils",
+      ":fake_recording_device",
       "..:module_api",
       "../..:webrtc_common",
       "../../base:gtest_prod",
@@ -686,6 +688,17 @@ if (rtc_include_tests) {
     }
   }
 
+  rtc_source_set("fake_recording_device") {
+    sources = [
+      "test/fake_recording_device.cc",
+      "test/fake_recording_device.h",
+    ]
+
+    deps = [
+      "../../base:rtc_base_approved",
+    ]
+  }
+
   if (rtc_enable_protobuf) {
     rtc_executable("unpack_aecdump") {
       testonly = true
@@ -724,6 +737,7 @@ if (rtc_include_tests) {
         ":audioproc_debug_proto",
         ":audioproc_protobuf_utils",
         ":audioproc_test_utils",
+        ":fake_recording_device",
         "../../base:protobuf_utils",
         "../../base:rtc_base_approved",
         "../../common_audio:common_audio",