rename some files related to MediaPlayer2.

Test: MediaPlayer2 plays
Bug: 63934228
Change-Id: I6def3f7f0aadabdbd9c8d6e722e7b8056a55aade
diff --git a/media/libmedia/nuplayer2/Android.bp b/media/libmedia/nuplayer2/Android.bp
index 700c840..4d29026 100644
--- a/media/libmedia/nuplayer2/Android.bp
+++ b/media/libmedia/nuplayer2/Android.bp
@@ -2,8 +2,8 @@
 
     srcs: [
         "JWakeLock.cpp",
-        "GenericSource.cpp",
-        "HTTPLiveSource.cpp",
+        "GenericSource2.cpp",
+        "HTTPLiveSource2.cpp",
         "NuPlayer2.cpp",
         "NuPlayer2CCDecoder.cpp",
         "NuPlayer2Decoder.cpp",
@@ -13,8 +13,7 @@
         "NuPlayer2Drm.cpp",
         "NuPlayer2Renderer.cpp",
         "NuPlayer2StreamListener.cpp",
-        "RTSPSource.cpp",
-        "StreamingSource.cpp",
+        "RTSPSource2.cpp",
     ],
 
     header_libs: [