[chrome:omnibox] Add 'reset autocomplete controller' checkbox.

Currently, the autocomplete controller is reset for each query. This prohibits
replicating behavior that depends on previous queries, e.g. results with
answers. This CL adds an input paramter to toggle whether to reset the
autocomplete controller for each query.

Bug: 891303
Change-Id: Iffbd2a71f952148eead0fc14cb0c1ba08d76b642
Reviewed-on: https://chromium-review.googlesource.com/c/1377191
Reviewed-by: Dominick Ng <dominickn@chromium.org>
Reviewed-by: Tommy Li <tommycli@chromium.org>
Reviewed-by: Justin Donnelly <jdonnelly@chromium.org>
Commit-Queue: manuk hovanesian <manukh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#617830}
6 files changed