[Webkit-unassigned] [Bug 26853] New: [Chromium] use different fonts for each script run.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=26853

           Summary: [Chromium] use different fonts for each script run.
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: agl at chromium.org


Previously, when rendering complex text, we picked a single font which could
render all the glyphs needed for the run. However, this meant that sometimes
lines were rendered with, for example, [LATIN, THAI, LATIN] and we could end up
with a different font for the Latin parts 
 than for lines without Thai in them.

With this patch, we pick a font for each script run.

This change is covered by existing layout tests.


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