GitLab

This CL adds 2dip padding between tray icons & fix WiFi icon padding.
WiFi icon is also used in network detailed view, so we have to set the
custom padding by checking IconType.

TEST=manual
BUG=885233

Change-Id: I5848007a1c71af54bba29105bcef7e063f7b6cf0
Reviewed-on: https://chromium-review.googlesource.com/c/1286237
Commit-Queue: Tetsui Ohkubo <tetsui@chromium.org>
Reviewed-by: James Cook <jamescook@chromium.org>
Cr-Commit-Position: refs/heads/master@{#600645}