Chromoting host to convert only changed regions
Chromoting host to convert only changed regions

This significantly reduces the number of pixels we need to perform color space
conversion.

BUG=71253
TEST=None

Review URL: http://codereview.chromium.org/6334040

git-svn-id: http://src.chromium.org/svn/trunk/src@73553 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 9eaef45c9d1c13902b8ee07485d063ec0a02ceb0
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