Delete cricket::VideoRenderer.

TBR=glaznev@webrtc.org (deleting an #include in main_wnd.h)
BUG=webrtc:5426

Review URL: https://codereview.webrtc.org/1819103003

Cr-Original-Commit-Position: refs/heads/master@{#12101}
Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: 1509fa1aa9cfb3be98b833ecf00ef466345dc05e
14 files changed