Use add icon for add custom input style menu

Bug: 16805043
Change-Id: I9730a6aa5d761924457edaabcee25db930e20f02

java/res/menu/add_style.xml

@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+/*
+**
+** Copyright 2014, The Android Open Source Project
+**
+** Licensed under the Apache License, Version 2.0 (the "License");
+** you may not use this file except in compliance with the License.
+** You may obtain a copy of the License at
+**
+**     http://www.apache.org/licenses/LICENSE-2.0
+**
+** Unless required by applicable law or agreed to in writing, software
+** distributed under the License is distributed on an "AS IS" BASIS,
+** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+** See the License for the specific language governing permissions and
+** limitations under the License.
+*/
+-->
+<menu xmlns:android="http://schemas.android.com/apk/res/android">
+    <item
+        android:id="@+id/action_add_style"
+        android:icon="@drawable/ic_add_circle_wht_24dp"
+        android:title="@string/add_style"
+        android:showAsAction="always" />
+</menu>

java/src/com/android/inputmethod/latin/settings/CustomInputStyleSettingsFragment.java

@@ -63,7 +63,6 @@ public final class CustomInputStyleSettingsFragment extends PreferenceFragment {
     private AlertDialog mSubtypeEnablerNotificationDialog;
     private String mSubtypePreferenceKeyForSubtypeEnabler;
 
-    private static final int MENU_ADD_SUBTYPE = Menu.FIRST;
     private static final String KEY_IS_ADDING_NEW_SUBTYPE = "is_adding_new_subtype";
     private static final String KEY_IS_SUBTYPE_ENABLER_NOTIFICATION_DIALOG_OPEN =
             "is_subtype_enabler_notification_dialog_open";
@@ -581,14 +580,13 @@ public final class CustomInputStyleSettingsFragment extends PreferenceFragment {
 
     @Override
     public void onCreateOptionsMenu(final Menu menu, final MenuInflater inflater) {
-        final MenuItem addSubtypeMenu = menu.add(0, MENU_ADD_SUBTYPE, 0, R.string.add_style);
-        addSubtypeMenu.setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM);
+        inflater.inflate(R.menu.add_style, menu);
     }
 
     @Override
     public boolean onOptionsItemSelected(final MenuItem item) {
         final int itemId = item.getItemId();
-        if (itemId == MENU_ADD_SUBTYPE) {
+        if (itemId == R.id.action_add_style) {
             final SubtypePreference newSubtype =
                     SubtypePreference.newIncompleteSubtypePreference(getActivity(), mSubtypeProxy);
             getPreferenceScreen().addPreference(newSubtype);