[webkit-reviews] review requested: [Bug 74609] [BlackBerry] Backingstore can get into bad state with invalid matrix : [Attachment 119429] Bugfix

[bugzilla-daemon at webkit.org]

Adam Treat <atreat at rim.com> has asked  for review:
Bug 74609: [BlackBerry] Backingstore can get into bad state with invalid matrix
https://bugs.webkit.org/show_bug.cgi?id=74609

Attachment 119429: Bugfix
https://bugs.webkit.org/attachment.cgi?id=119429&action=review

------- Additional Comments from Adam Treat <atreat at rim.com>
PR 122703

For certain configurations of webpage content and zoom level we were
failing to produce a valid backingstore matrix by being to strict on
whether a given matrix fits the preferred matrix orientation.
This patch fixes this by insisting on storing a candidate divisor
whether or not it agrees with the preferred matrix orientation and then
comparing all subsequent divisors.