API Extension: Support for optionally specifying a map of extra request headers when specifying the uri of media data to be played.

related-to-bug: 2393577

Original change by Andrei Popescu <andreip@google.com>
diff --git a/media/libmediaplayerservice/TestPlayerStub.h b/media/libmediaplayerservice/TestPlayerStub.h
index 80d53a8..6e6c3cd 100644
--- a/media/libmediaplayerservice/TestPlayerStub.h
+++ b/media/libmediaplayerservice/TestPlayerStub.h
@@ -65,7 +65,8 @@
     virtual status_t initCheck();
 
     // @param url Should be a test url. See class comment.
-    virtual status_t setDataSource(const char* url);
+    virtual status_t setDataSource(
+            const char* url, const KeyedVector<String8, String8> *headers);
 
     // Test player for a file descriptor source is not supported.
     virtual status_t setDataSource(int, int64_t, int64_t)  {