NEW140400
Downloading web fonts causes unnecessary font invalidation 
https://bugs.webkit.org/show_bug.cgi?id=140400
Summary Downloading web fonts causes unnecessary font invalidation
Myles C. Maxfield
Reported 2015-01-13 11:43:05 PST
Every time a web font is downloaded, it calls CSSFontSelector::dispatchInvalidationCallbacks(), which increments m_version. This, in addition to RenderStyle::setFontDescription() always creating new Font objects, means that every time a web font finishes downloading, we throw out everything we know about fonts and regenerate everything.
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