Issue 2071329: audio track is shorter than video track for video capture on sholes

Add API to retrieve number of frames dropped by audio input kernel driver.

Submitted on behalf of Masaki Sato <masaki.sato@motorola.com>
diff --git a/libs/audioflinger/AudioDumpInterface.h b/libs/audioflinger/AudioDumpInterface.h
index 5b9a6b1..4c62b3e 100644
--- a/libs/audioflinger/AudioDumpInterface.h
+++ b/libs/audioflinger/AudioDumpInterface.h
@@ -94,6 +94,7 @@
     virtual status_t    standby();
     virtual status_t    setParameters(const String8& keyValuePairs);
     virtual String8     getParameters(const String8& keys);
+    virtual unsigned int  getInputFramesLost() const;
     virtual status_t    dump(int fd, const Vector<String16>& args);
     void                Close(void);
     AudioStreamIn*     finalStream() { return mFinalStream; }