Pass BS/Return Key Events to EditBox in Custom Notification

ui/message_center/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/features.gni")
 import("//build/config/ui.gni")
 import("//testing/test.gni")
 
 # TODO(msw|mukai|dewittj): Move ash-specific files: crbug.com/585175
 component("message_center") {
@@ skipping 185 matching lines @@
   ]
 
   deps = [
     ":message_center",
     ":test_support",
     "//base",
     "//base/test:test_support",
     "//skia",
     "//testing/gtest",
     "//ui/base",
+    "//ui/base:test_support",
     "//ui/events",
     "//ui/gfx",
     "//ui/gfx/geometry",
     "//ui/gl",
     "//ui/gl:test_support",
     "//ui/resources",
     "//ui/resources:ui_test_pak",
     "//url",
   ]
 
@@ skipping 40 matching lines @@
     if (!is_ios) {
       sources += [ "mojo/struct_traits_unittest.cc" ]
       deps += [
         "//mojo/edk/system",
         "//ui/gfx:test_support",
         "//ui/message_center/mojo:test_interfaces",
       ]
     }
   }  # !is_ios && !is_android
 }