zijiehe 73c1234f6a Add a DesktopRect::UnionWith() function to extend current instance to cover both instances
This small piece of logic is duplicated in DxgiDuplicatorController,
DxgiAdapterDuplicator and desktop_configuration.mm. Meanwhile, the
implementation in desktop_configuration.mm is not safe. So I think a function in
DesktopRect to cover the requirement could be more efficient and safer.

BUG=webrtc:7541

Review-Url: https://codereview.webrtc.org/2845213002
Cr-Commit-Position: refs/heads/master@{#18171}
2017-05-16 23:50:32 +00:00
..
2016-11-16 19:11:38 +00:00
2016-10-19 01:22:25 +00:00
2016-10-19 01:22:25 +00:00