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

webrtc/call/call_perf_tests.cc

Index: webrtc/call/call_perf_tests.cc
diff --git a/webrtc/call/call_perf_tests.cc b/webrtc/call/call_perf_tests.cc
index 1551cd7b86791f61989196a5f861f60d201ca6ed..859538cee7c361ab2bee39522eeff6ba2e78093b 100644
--- a/webrtc/call/call_perf_tests.cc
+++ b/webrtc/call/call_perf_tests.cc
@@ -146,7 +146,9 @@ void CallPerfTest::TestAudioVideoSync(FecMode fec,
   metrics::Reset();
   VoiceEngine* voice_engine = VoiceEngine::Create();
   VoEBase* voe_base = VoEBase::GetInterface(voice_engine);
-  FakeAudioDevice fake_audio_device(audio_rtp_speed, 48000, 256);
+  FakeAudioDevice fake_audio_device(
+      FakeAudioDevice::CreatePulsedNoiseCapturer(256, 48000),
+      FakeAudioDevice::CreateDiscardRenderer(48000), audio_rtp_speed);
   EXPECT_EQ(0, voe_base->Init(&fake_audio_device, nullptr, decoder_factory_));
   VoEBase::ChannelConfig config;
   config.enable_voice_pacing = true;