Inherits CachedResource class from Noncopyable because its (its child class) CachedCSSStyleSheet instantiated by 'new' in WebCore/loader/Cache.cpp:75 and it is no need to be copyable.
Created attachment 42479 [details] proposed patch
Comment on attachment 42479 [details] proposed patch Looks OK to me.
Landed in 50548. https://trac.webkit.org/changeset/50548