GitLab

Create a custom element for the runtime host permissions controls in
the chrome://extensions page, rather than having them defined in the
DetailView element. This will make it easier to test and expand the
controls.

Pull the controls into runtime_host_permissions.[js|html], and extract
the tests from extension_detail_view_test.js to
extension_runtime_host_permisisons_test.js. Also add an additional test
to verify the runtime host permissions dialog is shown when the 'add'
button is clicked.

There should be no visible UI changes as a result of this CL.

Bug: 844128
Change-Id: I741adc921af95253087dbf31be1800c01fb4185c
Reviewed-on: https://chromium-review.googlesource.com/1146999Reviewed-by: Demetrios Papadopoulos <dpapad@chromium.org>
Commit-Queue: Devlin <rdevlin.cronin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#577367}