VideoRender now uses pointer constructor of CriticalSectionScoped.

BUG=184
TEST=video_render_module compiles on all platforms when removing ref ctor of
CriticalSectionScoped.

Review URL: https://webrtc-codereview.appspot.com/427004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@1843 4adac7df-926f-26a2-2b94-8c16560cd09d
14 files changed