[jumbo] Too many kMaxWidth in chrome/browser/ui

In jumbo builds many cc files are compiled together in the same
translation unit and they share the same anonymous namespace
so all symbol names need to be unique within that build target.

Due to a recently enabled kMaxWidth, there were now two kMaxWidth
which made certain, non-default, jumbo builds fail. This renames
the constants to include what they are max width of.

Bug: 939205
Change-Id: I1e441ee095223c4a6a6ce1f2bf18f6ede96acb50
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1547987
Auto-Submit: Daniel Bratell <bratell@opera.com>
Commit-Queue: Scott Violet <sky@chromium.org>
Reviewed-by: Scott Violet <sky@chromium.org>
Cr-Commit-Position: refs/heads/master@{#646916}
2 files changed