[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/android/src/native_map_view.hpp b/platform/android/src/native_map_view.hpp
index c9ba6089c3..9e6ad73dd7 100755
--- a/platform/android/src/native_map_view.hpp
+++ b/platform/android/src/native_map_view.hpp
@@ -4,7 +4,6 @@
 #include <mbgl/map/camera.hpp>
 #include <mbgl/map/map.hpp>
 #include <mbgl/util/noncopyable.hpp>
-#include <mbgl/util/default_thread_pool.hpp>
 #include <mbgl/util/run_loop.hpp>
 #include <mbgl/storage/network_status.hpp>
 
@@ -258,7 +257,6 @@ private:
     int height = 64;
 
     // Ensure these are initialised last
-    std::shared_ptr<mbgl::ThreadPool> threadPool;
     std::unique_ptr<mbgl::Map> map;
     mbgl::EdgeInsets insets;
 };