Bug 3438258 Add SurfaceTexture as MediaPlayer sink

This change enables the use of a SurfaceTexture in place of a Surface
as the video sink for an android.media.MediaPlayer. The new API
MediaPlayer.setTexture is currently hidden.

This includes:
 - New Java and C++ interfaces
 - C++ plumbing and implementation (JNI, Binder)
 - Stagefright AwesomePlayer and NuPlayer use ANativeWindow
   (either Surface or SurfaceTextureClient)

Change-Id: I2b568bee143d9eaf3dfc6cc4533c1bebbd5afc51
diff --git a/media/libmediaplayerservice/TestPlayerStub.h b/media/libmediaplayerservice/TestPlayerStub.h
index 6abd8e3..d9c3db3 100644
--- a/media/libmediaplayerservice/TestPlayerStub.h
+++ b/media/libmediaplayerservice/TestPlayerStub.h
@@ -78,6 +78,10 @@
     virtual status_t setVideoSurface(const android::sp<android::Surface>& s)  {
         return mPlayer->setVideoSurface(s);
     }
+    virtual status_t setVideoSurfaceTexture(
+            const android::sp<android::ISurfaceTexture>& st)  {
+        return mPlayer->setVideoSurfaceTexture(st);
+    }
     virtual status_t prepare() {return mPlayer->prepare();}
     virtual status_t prepareAsync()  {return mPlayer->prepareAsync();}
     virtual status_t start()  {return mPlayer->start();}