Revert "Use framework support to reserve icon space"

This causes DropdownPreference to crash

Bug: 37850881
This reverts commit 19f5783b75.

Change-Id: Iaa2ceb1a031e8e0b62bc886d908534f3b53d3835

res/layout/preference_dropdown_material_settings.xml

@@ -0,0 +1,35 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  Copyright (C) 2016 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.
+  -->
+
+
+<!-- Based off frameworks/base/core/res/res/layout/preference_dropdown_material.xml
+     except that icon space in this layout is always reserved -->
+<FrameLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content">
+
+    <Spinner
+        android:id="@+id/spinner"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="@dimen/preference_no_icon_padding_start"
+        android:visibility="invisible" />
+
+    <include layout="@layout/preference_material_settings"/>
+
+</FrameLayout>

res/values/styles_preference.xml

@@ -28,11 +28,11 @@
     </style>
 
     <!-- Preferences -->
-    <style name="SettingsPreference" parent="@style/Preference.Material">
+    <style name="SettingsPreference">
         <item name="allowDividerAbove">false</item>
         <item name="allowDividerBelow">true</item>
         <item name="singleLineTitle">false</item>
-        <item name="iconSpaceReserved">true</item>
+        <item name="android:layout">@layout/preference_material_settings</item>
     </style>
 
     <style name="ApnPreference" parent="SettingsPreference">
@@ -48,11 +48,13 @@
            parent="@style/Preference.DialogPreference.EditTextPreference.Material">
         <item name="allowDividerAbove">false</item>
         <item name="allowDividerBelow">true</item>
-        <item name="iconSpaceReserved">true</item>
+        <item name="android:layout">@layout/preference_material_settings</item>
         <item name="android:dialogLayout">@layout/preference_dialog_edittext</item>
     </style>
 
-    <style name="SettingsDropdownPreference" parent="SettingsPreference" />
+    <style name="SettingsDropdownPreference" parent="SettingsPreference">
+        <item name="android:layout">@layout/preference_dropdown_material_settings</item>
+    </style>
 
     <style name="SettingsDialogPreference" parent="SettingsPreference" />