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One major change is making all the leftImages template images. I looked
through all the places I could find that set a left image and they
all looked like they are currently blue, so making them a template
image should work.

Bug: 991185
Change-Id: Ie84b2a945bab07b4eebef889371a94d653eedecf
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1742235
Commit-Queue: Robbie Gibson <rkgibson@google.com>
Reviewed-by: Sergio Collazos <sczs@chromium.org>
Cr-Commit-Position: refs/heads/master@{#685340}