Add autocomplete to input field in dependency graph viewer

A dropdown with all known packages/classes that include the currently
input string is offered so that the full, exact name of the package
or class does not need to be entered.

Bug: 1093962
Change-Id: I124c646a0b8d703142f1c306c58d678abc84c620
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2280424
Commit-Queue: Henrique Nakashima <hnakashima@chromium.org>
Reviewed-by: Samuel Huang <huangs@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#786831}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 17c645b7cda1ea9303c1c84b7888a5a21a2a49b8
7 files changed