Add an options page to Select-to-Speak and allow setting voice name, rate

chrome/browser/resources/chromeos/select_to_speak/compiled_resources2.gyp

 # Copyright 2016 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.
 {
   'targets': [
     {
       'target_name': 'select_to_speak',
       'dependencies': [
+        'externs',
         '<(EXTERNS_GYP):accessibility_private',
         '<(EXTERNS_GYP):automation',
         '<(EXTERNS_GYP):chrome_extensions',
        ],
       'includes': ['../../../../../third_party/closure_compiler/compile_js2.gypi'],
     },
+    {
+      'target_name': 'select_to_speak_options',
+      'dependencies': [
+        'externs',
+        '<(EXTERNS_GYP):accessibility_private',
+        '<(EXTERNS_GYP):automation',
+        '<(EXTERNS_GYP):chrome_extensions',
+       ],
+      'includes': ['../../../../../third_party/closure_compiler/compile_js2.gypi'],
+    },
+    {
+      'target_name': 'externs',
+      'includes': ['../../../../../third_party/closure_compiler/compile_js2.gypi'],
+    },
   ],
 }