Remove BrowserThread dependency from usb_service.

chrome/browser/BUILD.gn

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//components/nacl/nacl_defines.gni")
 import("//tools/grit/grit_rule.gni")
 
@@ skipping 138 matching lines @@
       "//components/autofill/content/browser",
       "//components/dom_distiller/content",
       "//components/keyed_service/content",
       "//components/navigation_interception",
       "//components/password_manager/content/browser",
       "//components/precache/content",
       "//components/sessions",
       "//components/storage_monitor",
       "//components/translate/content/browser",
       "//components/url_matcher",
-      "//components/usb_service",
       "//components/visitedlink/browser",
       "//components/visitedlink/common",
       "//components/web_modal",
       "//content/app/resources",
       "//media",
       "//media/cast:net",
       "//mojo/environment:chromium",
       "//mojo/public/cpp/bindings",
       "//mojo/public/js/bindings",
       "//mojo/system",
@@ skipping 273 matching lines @@
   }
 
   if (is_android || is_ios) {
     # Mobile.
     sources += rebase_path(gypi_values.chrome_browser_mobile_sources,
                            ".", "//chrome")
   } else {
     # Non-mobile.
     sources += rebase_path(gypi_values.chrome_browser_non_mobile_sources,
                            ".", "//chrome")
+    deps += [
+      "//components/usb_service",
+      "//device/core",
+    ]
   }
 
   if (is_android) {
     sources += rebase_path(gypi_values.chrome_browser_android_sources,
                            ".", "//chrome")
     deps += [
       "//components/cdm/browser",
       #"../components/components.gyp:web_contents_delegate_android",  TODO(GYP)
       #"chrome_browser_jni_headers",  TODO(GYP)
     ]
     deps -= [
       "//third_party/libaddressinput",
       "//components/feedback",
       "//components/storage_monitor",
-      "//components/usb_service",
       "//components/web_modal",
     ]
   } else {
     sources += rebase_path(gypi_values.chrome_browser_non_android_sources,
                            ".", "//chrome")
   }
 
   if (is_mac) {
     deps += [
       "//third_party/google_toolbox_for_mac",
@@ skipping 184 matching lines @@
 # TODO(GYP) write internal action
 if (false) {  #if (is_chrome_branded) {
   action("chrome_internal_resources_gen") {
     # TODO(GYP)
   }
 } else {
   group("chrome_internal_resources_gen") {
     # Empty placeholder.
   }
 }