Network traffic annotation added to usb_test_gadget_impl.

device/BUILD.gn

 # Copyright 2015 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/features.gni")
 import("//testing/test.gni")
 
 if (is_android) {
   import("//build/config/android/rules.gni")  # For generate_jni().
 }
@@ skipping 152 matching lines @@
       "usb/webusb_descriptors_unittest.cc",
     ]
     deps += [
       "//device/base",
       "//device/base:mocks",
       "//device/u2f",
       "//device/usb",
       "//device/usb:test_support",
       "//device/usb/mojo",
       "//device/usb/public/interfaces",
+      "//net:test_support",
     ]
   }
 
   # UsbContext is a libusb-specific object.
   if (is_mac || is_win) {
     sources += [ "usb/usb_context_unittest.cc" ]
     deps += [ "//third_party/libusb" ]
   }
 
   if (is_android) {
@@ skipping 122 matching lines @@
     ]
     srcjar_deps = [ "//device/gamepad:java_enums_srcjar" ]
   }
 
   java_cpp_enum("bluetooth_test_javagen") {
     sources = [
       "bluetooth/test/bluetooth_test.h",
     ]
   }
 }