Make the FetchManager constructor private

third_party/WebKit/Source/modules/fetch/FetchManager.h

Index: third_party/WebKit/Source/modules/fetch/FetchManager.h
diff --git a/third_party/WebKit/Source/modules/fetch/FetchManager.h b/third_party/WebKit/Source/modules/fetch/FetchManager.h
index ac06ecb4ff24bbcbe5bddec2fd971867d1addef2..8e48bab3aae37dc9661e4251559339722775c815 100644
--- a/third_party/WebKit/Source/modules/fetch/FetchManager.h
+++ b/third_party/WebKit/Source/modules/fetch/FetchManager.h
@@ -21,13 +21,14 @@ class FetchManager final : public GarbageCollected<FetchManager>,
 
  public:
   static FetchManager* create(ExecutionContext*);
-  explicit FetchManager(ExecutionContext*);
   ScriptPromise fetch(ScriptState*, FetchRequestData*);
   void contextDestroyed() override;
 
   DECLARE_TRACE();
 
  private:
+  explicit FetchManager(ExecutionContext*);
+
   class Loader;
 
   // Removes loader from |m_loaders|.