Add interactive UI test for Select-to-Speak

chrome/test/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/chrome_build.gni")
 import("//build/config/compiler/compiler.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//chrome/common/features.gni")
@@ skipping 588 matching lines @@
       if (use_aura || is_mac) {
         deps += [ "//ui/touch_selection" ]
       }
     }
 
     if (is_chromeos) {
       sources += [
         "../../ash/accelerators/accelerator_interactive_uitest_chromeos.cc",
         "../browser/chromeos/accessibility/accessibility_highlight_manager_interactive_uitest.cc",
         "../browser/chromeos/accessibility/magnification_controller_browsertest.cc",
+        "../browser/chromeos/accessibility/select_to_speak_browsertest.cc",
         "../browser/chromeos/accessibility/spoken_feedback_browsertest.cc",
         "../browser/chromeos/accessibility/sticky_keys_browsertest.cc",
         "../browser/chromeos/input_method/textinput_browsertest.cc",
         "../browser/chromeos/input_method/textinput_surroundingtext_browsertest.cc",
         "../browser/chromeos/input_method/textinput_test_helper.cc",
         "../browser/chromeos/input_method/textinput_test_helper.h",
         "../browser/chromeos/login/eula_browsertest.cc",
         "../browser/chromeos/login/lock/screen_locker_browsertest.cc",
         "../browser/chromeos/login/lock/screen_locker_tester.cc",
         "../browser/chromeos/login/lock/screen_locker_tester.h",
@@ skipping 4576 matching lines @@
 }
 
 if (is_win) {
   loadable_module("conflicts_dll") {
     testonly = true
     sources = [
       "conflicts/conflicts_dll.cc",
     ]
   }
 }