GitLab

This CL moves input_host.mojom and input_messages.mojom to
public/mojom/input in order to organize mojom files at mojom
folder.

Bug: 919393
TBR=dcheng@chromium.org

Change-Id: Ic260ba051088e77fdd115876a6bf5a0fa0db8935
Reviewed-on: https://chromium-review.googlesource.com/c/1478322Reviewed-by: Daniel Cheng <dcheng@chromium.org>
Reviewed-by: Kentaro Hara <haraken@chromium.org>
Reviewed-by: Bo <boliu@chromium.org>
Reviewed-by: Ken Rockot <rockot@google.com>
Commit-Queue: Julie Jeongeun Kim <jkim@igalia.com>
Cr-Commit-Position: refs/heads/master@{#635768}