Build a basic Mojo service framework for device/usb

device/usb/public/interfaces/BUILD.gn

Index: device/usb/public/interfaces/BUILD.gn
diff --git a/components/devtools_service/public/interfaces/BUILD.gn b/device/usb/public/interfaces/BUILD.gn
similarity index 80%
copy from components/devtools_service/public/interfaces/BUILD.gn
copy to device/usb/public/interfaces/BUILD.gn
index db42b1a22e2a728bf33a434c09d34e891008b3a7..14b93625005689164e8e5335ecee5a916866ddf0 100644
--- a/components/devtools_service/public/interfaces/BUILD.gn
+++ b/device/usb/public/interfaces/BUILD.gn
@@ -2,11 +2,11 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-import("//build/module_args/mojo.gni")
 import("//third_party/mojo/src/mojo/public/tools/bindings/mojom.gni")
 
 mojom("interfaces") {
   sources = [
-    "devtools_service.mojom",
+    "device.mojom",
+    "device_manager.mojom",
   ]
 }