Fix bugs in DesktopRegion::IntersectWith() and DesktopRect::IntersectWith().

IntersectWith() didn't work correctly which breaks screen capturers in chromium.

BUG=crbug.com/243160
R=alexeypa@chromium.org, wez@chromium.org

Review URL: https://webrtc-codereview.appspot.com/1560004

git-svn-id: http://webrtc.googlecode.com/svn/trunk/webrtc@4102 4adac7df-926f-26a2-2b94-8c16560cd09d
2 files changed