Move the mojo JS bindings resource into a separate grd file in mojo/pubilc/js.

So that the resource could be used from both WebUI and extensions.

BUG=699569, 718047

Cq-Include-Trybots: master.tryserver.chromium.linux:closure_compilation;master.tryserver.chromium.mac:ios-simulator-cronet;master.tryserver.chromium.mac:ios-simulator-full-configs
Change-Id: If2ce60b15e0351aba801746cd863e5a2b9e85485
Reviewed-on: https://chromium-review.googlesource.com/762393
Commit-Queue: Yuzhu Shen <yzshen@chromium.org>
Reviewed-by: Scott Violet <sky@chromium.org>
Cr-Commit-Position: refs/heads/master@{#515792}
14 files changed