[core] Make the BackgroundScheduler a singleton

- Do not carry it over everywhere as parameter, it is a shared
  instance anyway and the lifecycle is pretty much the app lifecycle
  from the moment we instantiate a map.
- Rename to BackgroundScheduler because it is a Scheduler that will
  do tasks in the background, we don't make assumptions if it is a
  thread pool or a single thread.
- Most importantly, remove the dependency from `core` on `platform`.

1 files changed, 0 insertions, 2 deletions

diff --git a/platform/qt/src/qmapboxgl_p.hpp b/platform/qt/src/qmapboxgl_p.hpp
index 6a5b5ce04f..7f7040d7ac 100644
--- a/platform/qt/src/qmapboxgl_p.hpp
+++ b/platform/qt/src/qmapboxgl_p.hpp
@@ -8,7 +8,6 @@
 #include <mbgl/map/map.hpp>
 #include <mbgl/renderer/renderer_frontend.hpp>
 #include <mbgl/storage/resource_transform.hpp>
-#include <mbgl/util/default_thread_pool.hpp>
 #include <mbgl/util/geo.hpp>
 
 #include <QObject>
@@ -56,7 +55,6 @@ private:
     std::shared_ptr<mbgl::UpdateParameters> m_updateParameters;
 
     std::unique_ptr<QMapboxGLMapObserver> m_mapObserver;
-    std::shared_ptr<mbgl::ThreadPool> m_threadPool;
     std::unique_ptr<QMapboxGLMapRenderer> m_mapRenderer;
     std::unique_ptr<mbgl::Actor<mbgl::ResourceTransform>> m_resourceTransform;