GitLab

* Fix width of the dialog
* Move the next button to the bottom
* Adapt fonts according to specs
* Make content paddings adaptive

Bug: 1002102
Change-Id: Iad0a84d11ae20104685e4768a8c3805617b8978f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1893880Reviewed-by: Denis Kuznetsov [CET] <antrim@chromium.org>
Commit-Queue: Roman Sorokin [CET] <rsorokin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#712127}