Creating the audio_modem component

components/audio_modem/BUILD.gn

Index: components/audio_modem/BUILD.gn
diff --git a/components/audio_modem/BUILD.gn b/components/audio_modem/BUILD.gn
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index 0000000000000000000000000000000000000000..6676e6476a1cb399f39ef7e3658a9c72b59e4f04
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+++ b/components/audio_modem/BUILD.gn
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+# Copyright 2015 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+static_library("audio_modem") {
+  sources = [
+    "audio_player.h",
+    "audio_player_impl.cc",
+    "audio_player_impl.h",
+    "audio_recorder.h",
+    "audio_recorder_impl.cc",
+    "audio_recorder_impl.h",
+    "constants.cc",
+    "modem_impl.cc",
+    "modem_impl.h",
+    "public/modem.h",
+    "public/audio_modem_types.h",
+    "public/whispernet_client.h",
+    "audio_modem_switches.cc",
+    "audio_modem_switches.h",
+  ]
+
+  deps = [
+    "//base",
+    "//content",
+    "//media",
+    "//third_party/webrtc/common_audio",
+  ]
+}