[webkit-reviews] review requested: [Bug 25856] [Qt] Notify Cache an image is painted and purging can be triggered. : [Attachment 30450] add observer()->didDraw() to notify cache that this image is drawn.

[bugzilla-daemon at webkit.org]

Yongjun Zhang <yongjun.zhang at nokia.com> has asked  for review:
Bug 25856: [Qt] Notify Cache an image is painted and purging can be triggered.
https://bugs.webkit.org/show_bug.cgi?id=25856

Attachment 30450: add observer()->didDraw() to notify cache that this image is
drawn.
https://bugs.webkit.org/attachment.cgi?id=30450&action=review

------- Additional Comments from Yongjun Zhang <yongjun.zhang at nokia.com>
This helps reducing heap consumption for sites with large number of images.