Updating libjingle.gyp after addition new files yuvframescapturer.cc.
Updating libjingle.gyp after addition new files yuvframescapturer.cc.

TBR=pbos@webrc.org

Review URL: https://webrtc-codereview.appspot.com/7919006

Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: ecd622eec39c3486c7964389559a7ad6b2aa28aa

sippet/talk,sippet/talk,sippet/talk,sippet/talk,sippet/talk