Add the ability to read/write to WAV files in FakeAudioDevice

BUG=webrtc:7229

Review-Url: https://codereview.webrtc.org/2717623003
Cr-Original-Commit-Position: refs/heads/master@{#17230}
Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: a514584b9a594447b78ed15bba7504b5121d2fcd
diff --git a/test/DEPS b/test/DEPS
index 8a6da0a..1d44a07 100644
--- a/test/DEPS
+++ b/test/DEPS
@@ -1,6 +1,7 @@
 include_rules = [
   "+webrtc/base",
   "+webrtc/call",
+  "+webrtc/common_audio",
   "+webrtc/common_video",
   "+webrtc/logging/rtc_event_log",
   "+webrtc/media/base",