Add support for Android spellcheck menu in Chrome/WebViews

content/public/android/java/res/values-v21/styles.xml

 <?xml version="1.0" encoding="utf-8"?>
 <!-- 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.
 -->
 <resources>
     <style name="SelectActionMenuShare">
         <item name="android:icon">?android:attr/actionModeShareDrawable</item>
     </style>
     <style name="SelectActionMenuWebSearch">
         <item name="android:icon">?android:attr/actionModeWebSearchDrawable</item>
     </style>
+    <style name="TextSuggestionButton">
+        <item name="android:drawablePadding">8dp</item>
+        <!-- v17 uses sans-serif -->
+        <item name="android:fontFamily">sans-serif-medium</item>
+        <item name="android:gravity">start|center_vertical</item>
+        <item name="android:layout_gravity">start|center_vertical</item>
+        <item name="android:layout_height">48dp</item>
+        <item name="android:layout_width">match_parent</item>
+        <item name="android:paddingBottom">8dp</item>
+        <item name="android:paddingEnd">16dp</item>
+        <item name="android:paddingStart">16dp</item>
+        <item name="android:paddingTop">8dp</item>
+        <item name="android:singleLine">true</item>
+        <!-- v17 hard codes google_blue_500 -->
+        <item name="android:textColor">?android:attr/colorAccent</item>
+        <item name="android:textAllCaps">true</item>
+        <item name="android:textSize">14sp</item>
+    </style>
 </resources>
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