[Android] Adding Smart GO/NEXT feature in Chrome
Smart Go/Next brings better user experience to the user during form submitting applications.
For navigating between form elements, user can use NEXT/PREVIOUS button from IME
without touching on individual fields. This will avoid unnecessary form submissions before
filling or visiting all fields in the form.
Additionally it will save user time and avoid redundant network requests before actually
filling/attending entire fields in the form
Design Document: https://docs.google.com/document/d/1h0diigZ8LUi7A3UKJ_zwNUbvNQoe-Nwr55_p6ivSPNg/edit?usp=sharing
BUG=410785,648986
Review-Url: https://codereview.chromium.org/2839993002
Cr-Commit-Position: refs/heads/master@{#479126}
24 files changed
