Asynchronous GeometryTile deletion (#2051)

Co-authored-by: Tim Sylvester <tim@wetdogweather.com>

test/tile/vector_tile.test.cpp

@@ -15,35 +15,13 @@
 #include <mbgl/geometry/feature_index.hpp>
 #include <mbgl/annotation/annotation_manager.hpp>
 #include <mbgl/renderer/image_manager.hpp>
+#include <mbgl/test/vector_tile_test.hpp>
 #include <mbgl/text/glyph_manager.hpp>
 
 #include <memory>
 
 using namespace mbgl;
 
-class VectorTileTest {
-public:
-    std::shared_ptr<FileSource> fileSource = std::make_shared<FakeFileSource>(ResourceOptions::Default(),
-                                                                              ClientOptions());
-    TransformState transformState;
-    util::RunLoop loop;
-    style::Style style{fileSource, 1};
-    AnnotationManager annotationManager{style};
-    ImageManager imageManager;
-    GlyphManager glyphManager;
-    Tileset tileset{{"https://example.com"}, {0, 22}, "none"};
-
-    TileParameters tileParameters{1.0,
-                                  MapDebugOptions(),
-                                  transformState,
-                                  fileSource,
-                                  MapMode::Continuous,
-                                  annotationManager.makeWeakPtr(),
-                                  imageManager,
-                                  glyphManager,
-                                  0};
-};
-
 TEST(VectorTile, setError) {
     VectorTileTest test;
     VectorTile tile(OverscaledTileID(0, 0, 0), "source", test.tileParameters, test.tileset);