Enable ScreenCapturer unittests
Enable ScreenCapturer unittests

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TBR=kjellander@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/1679004

Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: 9e182795a9cb4034330dbb146755adf552f81ae0

sippet/webrtc,sippet/webrtc,sippet/webrtc,sippet/webrtc,sippet/webrtc,sippet/webrtc