GitLab

This reverts commit 6eb61402.

Reason for revert:

Findit (https://goo.gl/kROfz5) identified CL at revision 662924 as the
culprit for failures in the build cycles as shown on:
https://analysis.chromium.org/waterfall/culprit?key=ag9zfmZpbmRpdC1mb3ItbWVyRAsSDVdmU3VzcGVjdGVkQ0wiMWNocm9taXVtLzZlYjYxNDAyYzFiMWI0MzAxNzYyYzZhYWFlYTI4YjI5MjFjYmY0YzIM

Sample Failed Build: https://ci.chromium.org/buildbot/chromium/mac-archive-rel/136

Sample Failed Step: compile

Original change's description:
> Removes ui/platform_window/mojo as it is not used by anyone.
> 
> This is to remove the ref to some types under ui/base/ime/mojo, which will be removed later.
> 
> Bug: 965908
> Change-Id: I7979524066104c829b4f4e287a0ab87c9365f124
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1626055
> Reviewed-by: Dominick Ng <dominickn@chromium.org>
> Reviewed-by: Scott Violet <sky@chromium.org>
> Commit-Queue: Shu Chen <shuchen@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#662924}


Change-Id: I529c9c9f28c32d2799af6a9c7d8a95d6606755ff
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 965908
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1628221
Cr-Commit-Position: refs/heads/master@{#662945}