This is a reland of 30026214b13535a9fe1c47f1463378fbf976c643
Original change's description:
> Fix for out-of-bounds write in square test frame generator.
>
> The length is set on construction and includes an assumption on the
> image resolution, if the resolution changes, a square might be larger
> than what fits into the buffer, causing an out of bounds write. This
> CL fixes this simply by restricting the size of the square.
>
> Bug: webrtc:11415
> Change-Id: Iee14a1971997b4ae2fddef0a7af7c76a2509e879
> Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/170042
> Commit-Queue: Sebastian Jansson <srte@webrtc.org>
> Reviewed-by: Ali Tofigh <alito@webrtc.org>
> Cr-Commit-Position: refs/heads/master@{#30732}
Bug: webrtc:11415
Change-Id: I0dc584858208f478434ebc6f9e31634595c4e5ad
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/170116
Reviewed-by: Ali Tofigh <alito@webrtc.org>
Commit-Queue: Sebastian Jansson <srte@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#30779}
d35a686517