[android] Use new FileSourceManager interface

Use new interface for android jni adaptation classes.

platform/android/src/http_file_source.cpp

@@ -3,10 +3,11 @@
 #include <mbgl/storage/response.hpp>
 #include <mbgl/util/logging.hpp>
 
+#include <mbgl/util/async_request.hpp>
 #include <mbgl/util/async_task.hpp>
-#include <mbgl/util/util.hpp>
-#include <mbgl/util/string.hpp>
 #include <mbgl/util/http_header.hpp>
+#include <mbgl/util/string.hpp>
+#include <mbgl/util/util.hpp>
 
 #include <jni/jni.hpp>
 #include "attach_env.hpp"