[Webkit-unassigned] [Bug 284001] New: resolveForDocument() should explicitly set the FontCascade on the style

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=284001

            Bug ID: 284001
           Summary: resolveForDocument() should explicitly set the
                    FontCascade on the style
           Product: WebKit
           Version: Other
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: CSS
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: simon.fraser at apple.com
                CC: koivisto at iki.fi

Currently, resolveForDocument () does:
  documentStyle.fontCascade().update(&const_cast<Document&>(document).fontSelector())

This updates the FontCascade in-place, which means that that the object shared by existing RenderStyles, and any newly created styles will be the same even when there is a change that should have prompted style diffs.

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