Revert of Delete webrtc::VideoFrame methods buffer and stride.

Revert of Delete webrtc::VideoFrame methods buffer and stride. (patchset #14 id:250001 of https://codereview.webrtc.org/1900673002/ )

Reason for revert:
Breaks chrome FYI bots.

Original issue's description:
> Delete webrtc::VideoFrame methods buffer and stride.
>
> To make the HasOneRef/IsMutable hack work, also had to change the
> video_frame_buffer method to return a const ref to a scoped_ref_ptr,
> to not imply an AddRef.
>
> BUG=webrtc:5682
TBR=perkj@webrtc.org,magjed@webrtc.org,pbos@webrtc.org,pthatcher@webrtc.org,stefan@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:5682
Committed: https://crrev.com/5b3c443d301f2c2f18dac5b02652c08b91ea3828
Cr-Commit-Position: refs/heads/master@{#12558}

[nisse-webrtc, 2016-04-29 09:38:58]

Created Revert of Delete webrtc::VideoFrame methods buffer and stride.

[commit-bot: I haz the power, 2016-04-29 09:39:09]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1935443002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1935443002/1

[commit-bot: I haz the power, 2016-04-29 09:39:29]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-05-01 22:01:45]

Description was changed from

==========
Revert of Delete webrtc::VideoFrame methods buffer and stride. (patchset #14
id:250001 of https://codereview.webrtc.org/1900673002/ )

Reason for revert:
Breaks chrome FYI bots.

Original issue's description:
> Delete webrtc::VideoFrame methods buffer and stride.
> 
> To make the HasOneRef/IsMutable hack work, also had to change the
> video_frame_buffer method to return a const ref to a scoped_ref_ptr,
> to not imply an AddRef.
> 
> BUG=webrtc:5682

TBR=perkj@webrtc.org,magjed@webrtc.org,pbos@webrtc.org,pthatcher@webrtc.org,s...
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:5682
==========

to

==========
Revert of Delete webrtc::VideoFrame methods buffer and stride. (patchset #14
id:250001 of https://codereview.webrtc.org/1900673002/ )

Reason for revert:
Breaks chrome FYI bots.

Original issue's description:
> Delete webrtc::VideoFrame methods buffer and stride.
>
> To make the HasOneRef/IsMutable hack work, also had to change the
> video_frame_buffer method to return a const ref to a scoped_ref_ptr,
> to not imply an AddRef.
>
> BUG=webrtc:5682

TBR=perkj@webrtc.org,magjed@webrtc.org,pbos@webrtc.org,pthatcher@webrtc.org,s...
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:5682

Committed: https://crrev.com/5b3c443d301f2c2f18dac5b02652c08b91ea3828
Cr-Commit-Position: refs/heads/master@{#12558}
==========

[commit-bot: I haz the power, 2016-05-01 22:01:46]

Patchset 1 (id:??) landed as
https://crrev.com/5b3c443d301f2c2f18dac5b02652c08b91ea3828
Cr-Commit-Position: refs/heads/master@{#12558}

[nisse-webrtc, 2016-05-11 06:11:05]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.webrtc.org/1963413004/ by nisse@webrtc.org.

The reason for reverting is: I plan to reland this change in a week or two,
after downstream users are updated..