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.cpp b/libs/audioflinger/AudioDumpInterface.cpp
index 30e2bc9..a018b4c 100644
--- a/libs/audioflinger/AudioDumpInterface.cpp
+++ b/libs/audioflinger/AudioDumpInterface.cpp
@@ -509,6 +509,12 @@
     return param.toString();
 }
 
+unsigned int AudioStreamInDump::getInputFramesLost() const
+{
+    if (mFinalStream != 0 ) return mFinalStream->getInputFramesLost();
+    return 0;
+}
+
 status_t AudioStreamInDump::dump(int fd, const Vector<String16>& args)
 {
     if (mFinalStream != 0 ) return mFinalStream->dump(fd, args);