[android] - expose query feature extensions

platform/android/src/android_renderer_frontend.cpp

@@ -7,6 +7,7 @@
 #include <mbgl/util/async_task.hpp>
 #include <mbgl/util/thread.hpp>
 #include <mbgl/util/run_loop.hpp>
+#include <mbgl/util/geojson.hpp>
 
 #include "android_renderer_backend.hpp"
 
@@ -122,6 +123,14 @@ AnnotationIDs AndroidRendererFrontend::queryShapeAnnotations(const ScreenBox& bo
     return mapRenderer.actor().ask(&Renderer::queryShapeAnnotations, box).get();
 }
 
+FeatureExtensionValue AndroidRendererFrontend::queryFeatureExtensions(const std::string& sourceID,
+                                                     const Feature& feature,
+                                                     const std::string& extension,
+                                                     const std::string& extensionField,
+                                                     const optional<std::map<std::string, mbgl::Value>>& args) const {
+    return mapRenderer.actor().ask(&Renderer::queryFeatureExtensions, sourceID, feature, extension, extensionField, args).get();
+}
+
 } // namespace android
 } // namespace mbgl