Set frame length for frame converting in external renderer
Set frame length for frame converting in external renderer

ISSUE = Issue 1342
TEST  = Manual Test
Review URL: https://webrtc-codereview.appspot.com/1083005

Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: 7050f96bffcb45d96a00e89e097ab0ff4981338f

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