GitLab

This reverts commit 9a00ff2b.

Reason for revert: <INSERT REASONING HERE>
Merge to M75 beta is failed, so I need to reland it in master and then
try to merge it again to M75.

Original change's description:
> Use IMM32 instead of TSF on Win7.
> 
> On Windows 7, there are many IMM32-based IMEs are relying on IMM32
> support. We should continue supporting those legacy IMEs on Win7. We
> should disable TSF on Win7 and use IMM32. All other Windows platforms
> are not affected.
> 
> Bug: 963558
> Change-Id: I8f77afbdb734c355f4393880e80fafd98e25ae88
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1613974
> Reviewed-by: Yohei Yukawa <yukawa@chromium.org>
> Commit-Queue: Siye Liu <siliu@microsoft.com>
> Cr-Commit-Position: refs/heads/master@{#660261}

TBR=yukawa@chromium.org,siliu@microsoft.com

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: 963558
Change-Id: I4341bed006e86e756a21997c167c9526c6ce2901
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1618010Reviewed-by: Lan Wei <lanwei@chromium.org>
Commit-Queue: Lan Wei <lanwei@chromium.org>
Cr-Commit-Position: refs/heads/master@{#660980}