Use USB Mojo interfaces for chrome:://usb-internals.

This CL converted the directly calling from UsbService to Mojo
interfaces usage in usb_internals and fixed loading errors caused
by unused url.origin.mojom.js.

Bug: 699790
Change-Id: Ib6438913f69cad9111a6dfc85841b94d87a98dfc
Reviewed-on: https://chromium-review.googlesource.com/c/1347780
Commit-Queue: Donna Wu <donna.wu@intel.com>
Reviewed-by: calamity <calamity@chromium.org>
Reviewed-by: Reilly Grant <reillyg@chromium.org>
Reviewed-by: Daniel Cheng <dcheng@chromium.org>
Cr-Commit-Position: refs/heads/master@{#618474}
19 files changed