zijiehe 8697f9afba Skips the first frame in DxgiDuplicatorController
A bug has been reported to complaint the ScreenCapturerWinDirectx cannot capture
the first frame, which is used in "Report an issue" page.
A simple solution here is to skip the first frame.

This change also removes the friend relationship between
DxgiDuplicatorController / DxgiAdapterDuplicator / DxgiOutputDuplicator, which
is not really necessary.

BUG=682112

Review-Url: https://codereview.webrtc.org/2703123002
Cr-Commit-Position: refs/heads/master@{#16815}
2017-02-24 05:43:40 +00:00
..
2016-11-16 19:11:38 +00:00