tree ee21a687130a7924c39071c34fa58c340879ce94
parent 1f09dbe353bb0c75d2be6ef636bbd62ff028f149
author sergeyu@chromium.org <sergeyu@chromium.org@4adac7df-926f-26a2-2b94-8c16560cd09d> 1379101996 +0000
committer sergeyu@chromium.org <sergeyu@chromium.org@4adac7df-926f-26a2-2b94-8c16560cd09d> 1379101996 +0000

Implement DesktopRegion subtraction.

Region subtraction is used in chromoting client, so it's needed to
replace SkRegion.

R=wez@chromium.org

Review URL: https://webrtc-codereview.appspot.com/2205004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@4741 4adac7df-926f-26a2-2b94-8c16560cd09d