Run clang-tidy modernize-use-equals-default on //ui/views/[vw].*

This is a run of
run-clang-tidy.py -checks="-*,modernize-use-equals-default" -header-filter=ui/views/* \\src\\ui\\views\\

BUG=940732
TBR=sky@chromium.org

Change-Id: Ia91bb23af5a5467ab4d5f1619d0ca0d2ea70925f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1531179
Reviewed-by: Robert Liao <robliao@chromium.org>
Commit-Queue: Robert Liao <robliao@chromium.org>
Cr-Commit-Position: refs/heads/master@{#642243}
49 files changed