Made WebFactory::SetInstance private

third_party/WebKit/Source/core/exported/WebFactory.h

 // Copyright 2017 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 WebFactory_h
 #define WebFactory_h
 
 #include "core/CoreExport.h"
 #include "public/platform/WebPageVisibilityState.h"
 
 namespace blink {
 
 class ChromeClient;
 class WebViewBase;
 class WebViewClient;
 
 // WebFactory is a temporary class implemented in web/ that allows classes to
 // construct interfaces that are being moved out of web/.
 // This class will be removed once all implementations are in core/ or modules/.
 class CORE_EXPORT WebFactory {
  public:
-  // Takes ownership of |factory|.
-  // TODO(sashab): Make this method private to WebKit.cpp.
-  static void SetInstance(WebFactory&);
   static WebFactory& GetInstance();
 
   virtual ChromeClient* CreateChromeClient(WebViewBase*) const = 0;
   virtual WebViewBase* CreateWebViewBase(WebViewClient*,
                                          WebPageVisibilityState) const = 0;
 
+ protected:
+  // Takes ownership of |factory|.
+  static void SetInstance(WebFactory&);
+
  private:
   static WebFactory* factory_instance_;
 };
 
 }  // namespace blink
 
 #endif