Adds a feature flag for using icons in the Contacts API. Also adds all
of the piping between blink & mojo, and updates the web tests.
Bug: 1020564
Change-Id: I854b1a077792b007f631180d857a8f5abdbb6048
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1895339
Reviewed-by: Ken Buchanan <[email protected]>
Reviewed-by: Finnur Thorarinsson <[email protected]>
Reviewed-by: Ian Vollick <[email protected]>
Commit-Queue: Rayan Kanso <[email protected]>
Cr-Commit-Position: refs/heads/master@{#712275}
