Revert "Fix crash with CVO turned on for VP9 codec"
Revert "Fix crash with CVO turned on for VP9 codec"

This reverts commit 29b1a1c0c7c6f4b1ae4d63844b1dfaa7a72530a0.

TBR=guoweis@webrtc.org
BUG=

Review URL: https://webrtc-codereview.appspot.com/48929004

Cr-Original-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#8952}
Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: 1064679bbabcd01266edadad54a0377ca57c8fd8

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