WebUI: Auto-generate grd entries for ui/webui/resources/js, part 1

In preparation of moving all IDR_WEBUI_JS_* resources to
webui_generated_resources.h, a new header file needs to be
included in several places.

Bug: 1132403
Change-Id: Ibbdccde4177e916b63c736b98378576b930c2173
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2521931


Auto-Submit: dpapad <dpapad@chromium.org>
Reviewed-by: Kyle Horimoto <khorimoto@chromium.org>
Reviewed-by: Mitsuru Oshima <oshima@chromium.org>
Commit-Queue: Mitsuru Oshima <oshima@chromium.org>
Cr-Commit-Position: refs/heads/master@{#824910}