Revert "This CL implements Fluent Style for checkbox and radio."

This reverts commit 75806f9c3ed8d708446e2e625715d80c278d8b0f.

Reason for revert: checkbox-appearance-basic.html webkit_layout_tests failing

BUG: 956843

Original change's description:
> This CL implements Fluent Style for checkbox and radio.
> 
> This is accomplished by adding a new feature flag FormControlsRefresh
> which when turned on will enable the new controls UI.
> 
> The implementations for checkbox and radio (PaintCheckbox, PaintRadio)
> are added as part of NativeThemeAura by overriding the current style
> provided by NativeThemeBase.
> 
> The change is validated using pixel tests for both feature enabled /
> disabled states.
> 
> Bug: 956778
> Change-Id: I23b3ca18905e3497a35cc9606e0a38e9d4a010d4
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1551183
> Commit-Queue: Ionel Popescu <iopopesc@microsoft.com>
> Reviewed-by: Florin Malita <fmalita@chromium.org>
> Reviewed-by: ccameron <ccameron@chromium.org>
> Reviewed-by: Chris Harrelson <chrishtr@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#654262}

TBR=sadrul@chromium.org,ccameron@chromium.org,fmalita@chromium.org,chrishtr@chromium.org,iopopesc@microsoft.com

Change-Id: I8df60ce6e3d349d6596863350fcea17441c45633
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 956778
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1584486
Reviewed-by: Tsuyoshi Horo <horo@chromium.org>
Commit-Queue: Tsuyoshi Horo <horo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#654345}
12 files changed