New statistics interface for APM

webrtc/media/engine/fakewebrtcvoiceengine.h

Index: webrtc/media/engine/fakewebrtcvoiceengine.h
diff --git a/webrtc/media/engine/fakewebrtcvoiceengine.h b/webrtc/media/engine/fakewebrtcvoiceengine.h
index e0e71fb8002cd8eff7e37b6257dd575ff1157fb5..c068f6b45c246dd53a64b7cb33b109f405b3a4d0 100644
--- a/webrtc/media/engine/fakewebrtcvoiceengine.h
+++ b/webrtc/media/engine/fakewebrtcvoiceengine.h
@@ -120,6 +120,10 @@ class FakeAudioProcessing : public webrtc::AudioProcessing {
   WEBRTC_STUB(StartDebugRecordingForPlatformFile, (rtc::PlatformFile handle));
   WEBRTC_STUB(StopDebugRecording, ());
   WEBRTC_VOID_STUB(UpdateHistogramsOnCallEnd, ());
+  AudioProcessing::AudioProcessingStatistics GetStatistics() const override {
+    AudioProcessing::AudioProcessingStatistics stats;
+    return stats;
+  }
   webrtc::EchoCancellation* echo_cancellation() const override { return NULL; }
   webrtc::EchoControlMobile* echo_control_mobile() const override {
     return NULL;