[webkit-reviews] review requested: [Bug 29912] Avoid zero division during SVGPaintServerPattern::setup() in Chromium : [Attachment 40344] Proposed fix for a Chromium SVG crash

[bugzilla-daemon at webkit.org]

Shiki Okasaka <shiki at google.com> has asked  for review:
Bug 29912: Avoid zero division during SVGPaintServerPattern::setup() in
Chromium
https://bugs.webkit.org/show_bug.cgi?id=29912

Attachment 40344: Proposed fix for a Chromium SVG crash
https://bugs.webkit.org/attachment.cgi?id=40344&action=review

------- Additional Comments from Shiki Okasaka <shiki at google.com>
Fix a Chromium SVG crash when visiting
  http://upload.wikimedia.org/wikipedia/commons/c/c2/World_map_pol_2005_v02.svg

as reported by
  http://crbug.com/14521

The issue is tileRect is not empty with Skia when tileWidth or tileHeight
becomes
zero, and the calculation of numY or numX causes a zero division.