[DevTools] Do not delegate menu list rendering in LayoutThemeMobile.

third_party/WebKit/Source/core/layout/LayoutThemeMobile.h

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 19 matching lines @@
 
 namespace blink {
 
 class LayoutThemeMobile : public LayoutThemeDefault {
 public:
     static PassRefPtr<LayoutTheme> create();
     String extraDefaultStyleSheet() override;
 
     void adjustInnerSpinButtonStyle(ComputedStyle&) const override;
 
-    bool delegatesMenuListRendering() const override { return true; }
-
     String extraMediaControlsStyleSheet() override;
 
     Color platformTapHighlightColor() const override
     {
         return LayoutThemeMobile::defaultTapHighlightColor;
     }
 
     Color platformActiveSelectionBackgroundColor() const override
     {
         return LayoutThemeMobile::defaultActiveSelectionBackgroundColor;
     }
 
 protected:
     ~LayoutThemeMobile() override;
 
 private:
     static const RGBA32 defaultTapHighlightColor = 0x6633b5e5;
     static const RGBA32 defaultActiveSelectionBackgroundColor = 0x6633b5e5;
 };
 
 } // namespace blink
 
 #endif // LayoutThemeMobile_h