Fix readpixels issue
Fix readpixels issue

will check in tests when machine is working again

TBR=kbr@chromium.org
TEST=none
BUG=none


git-svn-id: http://src.chromium.org/svn/trunk/src@46297 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 43012004000a57ef1899628f62da80c7e18d820c
meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser