Make the FetchManager constructor private

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

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef FetchManager_h
 #define FetchManager_h
 
 #include "bindings/core/v8/ScriptPromise.h"
 #include "core/dom/ContextLifecycleObserver.h"
 #include "platform/heap/Handle.h"
 
 namespace blink {
 
 class ExecutionContext;
 class FetchRequestData;
 class ScriptState;
 
 class FetchManager final : public GarbageCollected<FetchManager>,
                            public ContextLifecycleObserver {
   USING_GARBAGE_COLLECTED_MIXIN(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|.
   void onLoaderFinished(Loader*);
 
   HeapHashSet<Member<Loader>> m_loaders;
 };
 
 }  // namespace blink
 
 #endif  // FetchManager_h