Replace new with sp<>::make

As per sp's recommendations.

Bug: 204401299
Change-Id: Ida464b7ef44e2ad5855764e4e7d03b9f6bd5d1b0
Test: Built and flashed device.
Test: atest CtsMediaTestCases:MediaPlayerTest
diff --git a/media/jni/android_media_MediaPlayer.cpp b/media/jni/android_media_MediaPlayer.cpp
index 2636ab2..8dcdc98 100644
--- a/media/jni/android_media_MediaPlayer.cpp
+++ b/media/jni/android_media_MediaPlayer.cpp
@@ -953,7 +953,7 @@
     Parcel* parcel = parcelForJavaObject(env, jAttributionSource);
     android::content::AttributionSourceState attributionSource;
     attributionSource.readFromParcel(parcel);
-    sp<MediaPlayer> mp = new MediaPlayer(attributionSource);
+    sp<MediaPlayer> mp = sp<MediaPlayer>::make(attributionSource);
     if (mp == NULL) {
         jniThrowException(env, "java/lang/RuntimeException", "Out of memory");
         return;