Test submission of complete AEC-dump refactoring.

webrtc/modules/audio_processing/aec_dump/BUILD.gn

+import("//third_party/protobuf/proto_library.gni")
+import("../../../webrtc.gni")
+
+rtc_source_set("aec_dump") {
+  sources = [
+    "aec_dump_factory.h",
+  ]
+
+  public_deps = [
+    "..:aec_dump_interface",
+  ]
+}
+
+rtc_source_set("aec_dump_impl") {
+  assert_no_deps = [ ":null_aec_dump_factory" ]
+  sources = [
+    "aec_dump_impl.cc",
+    "aec_dump_impl.h",
+    "capture_stream_info_impl.h",
+  ]
+
+  public = []
+
+  public_deps = [
+    ":aec_dump",
+    "..:aec_dump_interface",
+  ]
+
+  deps = [
+    "../../../base:rtc_base_approved",
+    "../../../base:rtc_task_queue",
+    "../../../system_wrappers",
+  ]
+
+  # Will not compile without proto.
+  if (rtc_enable_protobuf) {
+    deps += [ "../:audioproc_debug_proto" ]
+  }
+}
+
+rtc_source_set("null_aec_dump_factory") {
+  assert_no_deps = [ ":aec_dump_impl" ]
+  sources = [
+    "null_aec_dump_factory.cc",
+  ]
+
+  public_deps = [
+    ":aec_dump",
+    "..:aec_dump_interface",
+  ]
+}
+
+rtc_source_set("aec_dump_unittests") {
+  testonly = true
+  defines = []
+  deps = [
+    "..:aec_dump_interface",
+  ]
+  sources = []
+  if (rtc_enable_protobuf) {
+    deps += [
+      ":aec_dump",
+      "..:audioproc_debug_proto",
+      "../../../base:rtc_task_queue",
+      "../../../test:test_support",
+      "//testing/gtest",
+
+      # Might be added later:
+      # "..:audioproc_protobuf_utils",
+      # "..:audioproc_unittest_proto",
+    ]
+    sources += [ "aec_dump_unittest.cc" ]
+  }
+}