1 files changed, 6 insertions, 5 deletions
diff --git a/platform/default/mbgl/gl/headless_backend.hpp b/platform/default/mbgl/gl/headless_backend.hpp
index f96b01300b..7757037533 100644
--- a/platform/default/mbgl/gl/headless_backend.hpp
+++ b/platform/default/mbgl/gl/headless_backend.hpp
@@ -19,23 +19,24 @@ public:
     void setSize(Size);
     PremultipliedImage readStillImage();
 
-    struct Impl {
+    class Impl {
+    public:
         virtual ~Impl() = default;
+        virtual gl::ProcAddress getExtensionFunctionPointer(const char*) = 0;
         virtual void activateContext() = 0;
         virtual void deactivateContext() {}
     };
 
 private:
     // Implementation specific functions
-    gl::ProcAddress initializeExtension(const char*) override;
+    gl::ProcAddress getExtensionFunctionPointer(const char*) override;
 
     void activate() override;
     void deactivate() override;
 
-    bool hasContext() const { return bool(impl); }
-
-    void createContext();
+    void createImpl();
 
+private:
     std::unique_ptr<Impl> impl;
 
     Size size;