nuplayer: clear pending audio access unit on flush.

Also add flag to avoid reading on flush.

Bug: 18540219
Change-Id: I2fc351c32c87db9a8c8c2aad12ee2bd56a0370ab
diff --git a/media/libmediaplayerservice/nuplayer/NuPlayerDecoderPassThrough.h b/media/libmediaplayerservice/nuplayer/NuPlayerDecoderPassThrough.h
index d761b07..37b28c8 100644
--- a/media/libmediaplayerservice/nuplayer/NuPlayerDecoderPassThrough.h
+++ b/media/libmediaplayerservice/nuplayer/NuPlayerDecoderPassThrough.h
@@ -56,6 +56,7 @@
     sp<Source> mSource;
     sp<Renderer> mRenderer;
     int64_t mSkipRenderingUntilMediaTimeUs;
+    bool mPaused;
 
     int32_t mBufferGeneration;
     bool    mReachedEOS;
@@ -73,7 +74,7 @@
     AString mComponentName;
 
     bool isStaleReply(const sp<AMessage> &msg);
-    bool isCacheFullOrEOS() const;
+    bool isDoneFetching() const;
 
     status_t dequeueAccessUnit(sp<ABuffer> *accessUnit);
     sp<ABuffer> aggregateBuffer(const sp<ABuffer> &accessUnit);