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/MidiFile.cpp b/media/libmediaplayerservice/MidiFile.cpp
index e9cbb97..1b0b05f 100644
--- a/media/libmediaplayerservice/MidiFile.cpp
+++ b/media/libmediaplayerservice/MidiFile.cpp
@@ -115,8 +115,8 @@
     release();
 }
 
-status_t MidiFile::setDataSource(const char* path)
-{
+status_t MidiFile::setDataSource(
+        const char* path, const KeyedVector<String8, String8> *) {
     LOGV("MidiFile::setDataSource url=%s", path);
     Mutex::Autolock lock(mMutex);