GitLab

Some things encountered while working on making workspace drag
work with maximized windows.

* remove unused members/variables
* remove base::NumberToString in tests
* combined two anon namespaces
* small miscallenous updates

Test: none
Bug: 1066159
Change-Id: I2dfd1cd7f416d9e93b034147d408227f16a39d13
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2142777Reviewed-by: Xiaoqian Dai <xdai@chromium.org>
Commit-Queue: Sammie Quon <sammiequon@chromium.org>
Cr-Commit-Position: refs/heads/master@{#758059}