Revert of Delete unused and almost unused frame-related methods.

Revert of Delete unused and almost unused frame-related methods. (patchset #12 id:220001 of https://codereview.webrtc.org/2065733003/ )

Reason for revert:
Breaks downstream applications which inherits webrtc::VideoFrameBuffer and tries to override deleted methods data(), stride() and MutableData().

Original issue's description:
> Delete unused and almost unused frame-related methods.
>
> webrtc::VideoFrame::set_video_frame_buffer
> webrtc::VideoFrame::ConvertNativeToI420Frame
>
> cricket::WebRtcVideoFrame::InitToBlack
>
> VideoFrameBuffer::data
> VideoFrameBuffer::stride
> VideoFrameBuffer::MutableData
>
> TBR=tkchin@webrtc.org # Refactoring affecting RTCVideoFrame
> BUG=webrtc:5682
>
> Committed: https://crrev.com/76270de4bc2dac188f10f805e6e2fb86693ef864
> Cr-Commit-Position: refs/heads/master@{#13183}

TBR=perkj@webrtc.org,pbos@webrtc.org,marpan@webrtc.org,tkchin@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/72e735d3867a0fd6ab7e4d0761c7ba5f6c068617
Cr-Commit-Position: refs/heads/master@{#13184}

[nisse-webrtc, 2016-06-17 09:54:55]

The CQ bit was checked by nisse@webrtc.org

[nisse-webrtc, 2016-06-17 09:54:55]

Created Revert of Delete unused and almost unused frame-related methods.

[commit-bot: I haz the power, 2016-06-17 09:55:08]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/2076113002/1

[commit-bot: I haz the power, 2016-06-17 09:55:19]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-06-17 09:55:31]

Description was changed from

==========
Revert of Delete unused and almost unused frame-related methods. (patchset #12
id:220001 of https://codereview.webrtc.org/2065733003/ )

Reason for revert:
Breaks downstream applications which inherits webrtc::VideoFrameBuffer and tries
to override deleted methods data(), stride() and MutableData().

Original issue's description:
> Delete unused and almost unused frame-related methods.
> 
> webrtc::VideoFrame::set_video_frame_buffer
> webrtc::VideoFrame::ConvertNativeToI420Frame
> 
> cricket::WebRtcVideoFrame::InitToBlack
> 
> VideoFrameBuffer::data
> VideoFrameBuffer::stride
> VideoFrameBuffer::MutableData
> 
> TBR=tkchin@webrtc.org # Refactoring affecting RTCVideoFrame
> BUG=webrtc:5682
> 
> Committed: https://crrev.com/76270de4bc2dac188f10f805e6e2fb86693ef864
> Cr-Commit-Position: refs/heads/master@{#13183}

TBR=perkj@webrtc.org,pbos@webrtc.org,marpan@webrtc.org,tkchin@webrtc.org
# 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 unused and almost unused frame-related methods. (patchset #12
id:220001 of https://codereview.webrtc.org/2065733003/ )

Reason for revert:
Breaks downstream applications which inherits webrtc::VideoFrameBuffer and tries
to override deleted methods data(), stride() and MutableData().

Original issue's description:
> Delete unused and almost unused frame-related methods.
>
> webrtc::VideoFrame::set_video_frame_buffer
> webrtc::VideoFrame::ConvertNativeToI420Frame
>
> cricket::WebRtcVideoFrame::InitToBlack
>
> VideoFrameBuffer::data
> VideoFrameBuffer::stride
> VideoFrameBuffer::MutableData
>
> TBR=tkchin@webrtc.org # Refactoring affecting RTCVideoFrame
> BUG=webrtc:5682
>
> Committed: https://crrev.com/76270de4bc2dac188f10f805e6e2fb86693ef864
> Cr-Commit-Position: refs/heads/master@{#13183}

TBR=perkj@webrtc.org,pbos@webrtc.org,marpan@webrtc.org,tkchin@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/72e735d3867a0fd6ab7e4d0761c7ba5f6c068617
Cr-Commit-Position: refs/heads/master@{#13184}
==========

[commit-bot: I haz the power, 2016-06-17 09:55:33]

Patchset 1 (id:??) landed as
https://crrev.com/72e735d3867a0fd6ab7e4d0761c7ba5f6c068617
Cr-Commit-Position: refs/heads/master@{#13184}

[nisse-webrtc, 2016-06-17 10:18:30]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.webrtc.org/2076123002/ by nisse@webrtc.org.

The reason for reverting is: Planning to reland, with the video_frame_buffer
changes taken out..