This CL swaps the lightbulb icon for the new hybrid shield-bulb and
switches to the "big icon" infobar.  This CL also removes the lightbulb
icon from Android, since nothing is using it anymore.

Bug: 1000337
Change-Id: Iabacf98e0a568bfaff03e8e6a0318f055cfe74a3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1783279Reviewed-by: Andrew Grieve <agrieve@chromium.org>
Reviewed-by: Matthew Jones <mdjones@chromium.org>
Commit-Queue: Joe DeBlasio <jdeblasio@chromium.org>
Cr-Commit-Position: refs/heads/master@{#696995}