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
Commit-Queue: Henrique Nakashima <>
Reviewed-by: Samuel Huang <>
Cr-Original-Commit-Position: refs/heads/master@{#786831}
Cr-Mirrored-Commit: 17c645b7cda1ea9303c1c84b7888a5a21a2a49b8
7 files changed