Revert "Make IssueLensRequest use CenterRotatedBox"

This reverts commit 671da8b0.

Reason for revert: 
LensOverlayControllerCUJTest tests became flaky, see
https://ci.chromium.org/ui/p/chromium/builders/ci/linux-ubsan-vptr

Original change's description:
> Make IssueLensRequest use CenterRotatedBox
>
> This fixes an issue I realized after https://crrev.com/c/5386207. The
> mojom interface definition for IssueLensRequest is a bit ambiguous with
> format of the region. This CL transitions to use CenterRotateBox over
> RectF to be more clear about the format being sent through mojom.
>
> Bug: b/328294932
> Change-Id: Ide3edf8f87824762d272f91280b0b68b6b827679
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5406819


> Reviewed-by: Jason Hu <hujasonx@google.com>
> Reviewed-by: Daniel Cheng <dcheng@chromium.org>
> Commit-Queue: Duncan Mercer <mercerd@google.com>
> Cr-Commit-Position: refs/heads/main@{#1280941}

Bug: b/328294932
Change-Id: I2d865b58d0667991a4ba8478383e1f862432d44d
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5412213


Auto-Submit: Michael Ershov <miersh@google.com>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Reviewed-by: David Awogbemila <awogbemila@chromium.org>
Commit-Queue: Michael Ershov <miersh@google.com>
Owners-Override: Michael Ershov <miersh@google.com>
Cr-Commit-Position: refs/heads/main@{#1281137}