No need of okio.BufferedSource

response provides a way to get raw bytes now.

android/tangram/src/com/mapzen/tangram/MapController.java

@@ -10,7 +10,6 @@
 import com.mapzen.tangram.TouchInput.Gestures;
 import okhttp3.Call;
 import okhttp3.Callback;
-import okhttp3.Request;
 import okhttp3.Response;
 
 import java.io.IOException;
@@ -21,8 +20,6 @@
 import javax.microedition.khronos.egl.EGLConfig;
 import javax.microedition.khronos.opengles.GL10;
 
-import okio.BufferedSource;
-
 /**
  * {@code MapController} is the main class for interacting with a Tangram map.
  */
@@ -1007,8 +1004,7 @@ public void onResponse(Call call, Response response) throws IOException {
                     nativeOnUrlFailure(callbackPtr);
                     throw new IOException("Unexpected response code: " + response);
                 }
-                BufferedSource source = response.body().source();
-                byte[] bytes = source.readByteArray();
+                byte[] bytes = response.body().bytes();
                 nativeOnUrlSuccess(bytes, callbackPtr);
             }
         });