This CL provides implements the query tile chip spec. The generic
ChipView class was augmented to support additional attributes such
as useRoundedIcon and optional endIcon concepts.

Bug: 1073793
Change-Id: I222ee46df0ab0a5d283cb0843278f7510854eb2f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2155494
Commit-Queue: Shakti Sahu <shaktisahu@chromium.org>
Reviewed-by: Theresa  <twellington@chromium.org>
Reviewed-by: David Trainor <dtrainor@chromium.org>
Cr-Commit-Position: refs/heads/master@{#762133}