GitLab

 - Include webui_generated_resources.grd to Android and
   iOS builds (previously only included on Desktop).
 - Update shared_resources_data_source.cc and
   shared_resources_data_source_ios.mm accordingly.
 - Update various BUILD.gn file as needed.
 - Move all ui/webui/resources/js/cr/ui/ files from
   webui_resources.grd to webui_generated_resources.grd.

Bug: 1132403
Change-Id: I7e92caf28f80ce31ce6e9009e63821037283e508
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2503814Reviewed-by: Eugene But <eugenebut@chromium.org>
Reviewed-by: Rohit Rao <rohitrao@chromium.org>
Reviewed-by: Rebekah Potter <rbpotter@chromium.org>
Commit-Queue: dpapad <dpapad@chromium.org>
Cr-Commit-Position: refs/heads/master@{#823719}