Rename ISurfaceTexture and SurfaceTexture

The C++ class names don't match what the classes do, so rename
ISurfaceTexture to IGraphicBufferProducer, and SurfaceTexture to
GLConsumer.

Bug 7736700

Change-Id: I64520a55f8c09fe6215382ea361c539a9940cba5
diff --git a/media/libmediaplayerservice/MidiFile.h b/media/libmediaplayerservice/MidiFile.h
index f6f8f7b..24d59b4 100644
--- a/media/libmediaplayerservice/MidiFile.h
+++ b/media/libmediaplayerservice/MidiFile.h
@@ -36,7 +36,7 @@
 
     virtual status_t    setDataSource(int fd, int64_t offset, int64_t length);
     virtual status_t    setVideoSurfaceTexture(
-                                const sp<ISurfaceTexture>& surfaceTexture)
+                                const sp<IGraphicBufferProducer>& bufferProducer)
                             { return UNKNOWN_ERROR; }
     virtual status_t    prepare();
     virtual status_t    prepareAsync();