Set thread scheduling parameters inside the new thread.
Set thread scheduling parameters inside the new thread.

This makes it possible to restrict threads from modifying scheduling
parameters of another thread in the Chrome Linux sandbox.

BUG=
R=henrike@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/28539004

git-svn-id: 03ae4fbe531b1eefc9d815f31e49022782c42458@7324 4adac7df-926f-26a2-2b94-8c16560cd09d

Alkalyne/webrtctrunk,PersonifyInc/chromium_webrtc,sippet/webrtc,Alkalyne/webrtctrunk,jchavanton/webrtc,aleonliao/webrtc-trunk,jchavanton/webrtc,jchavanton/webrtc,Alkalyne/webrtctrunk,Alkalyne/webrtctrunk,krieger-od/webrtc,aleonliao/webrtc-trunk,jchavanton/webrtc,krieger-od/nwjs_chromium_webrtc,PersonifyInc/chromium_webrtc,PersonifyInc/chromium_webrtc,sippet/webrtc,PersonifyInc/chromium_webrtc,jchavanton/webrtc,sippet/webrtc,aleonliao/webrtc-trunk,krieger-od/webrtc,krieger-od/nwjs_chromium_webrtc,Alkalyne/webrtctrunk,sippet/webrtc,Alkalyne/webrtctrunk,jchavanton/webrtc,krieger-od/nwjs_chromium_webrtc,krieger-od/nwjs_chromium_webrtc,aleonliao/webrtc-trunk,krieger-od/webrtc,aleonliao/webrtc-trunk,sippet/webrtc,sippet/webrtc,PersonifyInc/chromium_webrtc,PersonifyInc/chromium_webrtc,krieger-od/nwjs_chromium_webrtc,jchavanton/webrtc,Alkalyne/webrtctrunk,krieger-od/webrtc,krieger-od/nwjs_chromium_webrtc,krieger-od/webrtc,Alkalyne/webrtctrunk,krieger-od/webrtc,aleonliao/webrtc-trunk