Support passing headers to MediaMetadataRetriever's setDataSource API

Change-Id: Ib1a5c08fc5034cac05034db27007a35c9b660b26
related-to-bug: 3506316
diff --git a/media/libmediaplayerservice/MetadataRetrieverClient.h b/media/libmediaplayerservice/MetadataRetrieverClient.h
index b834715..f08f933 100644
--- a/media/libmediaplayerservice/MetadataRetrieverClient.h
+++ b/media/libmediaplayerservice/MetadataRetrieverClient.h
@@ -41,7 +41,10 @@
     // Implements IMediaMetadataRetriever interface
     // These methods are called in IMediaMetadataRetriever.cpp?
     virtual void                    disconnect();
-    virtual status_t                setDataSource(const char *url);
+
+    virtual status_t                setDataSource(
+            const char *url, const KeyedVector<String8, String8> *headers);
+
     virtual status_t                setDataSource(int fd, int64_t offset, int64_t length);
     virtual sp<IMemory>             getFrameAtTime(int64_t timeUs, int option);
     virtual sp<IMemory>             extractAlbumArt();