Update account and sync management UX

chrome/android/java/res/values-v17/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 xmlns:tools="http://schemas.android.com/tools">
     <!-- Q: Why put style resources under values-v17/ ?
          A: Problem:
             1. paddingStart causes a crash on Galaxy Tab&Note b/8351339.
             2. So we wrote a build script(generate_v14_compatible_resources.py) to convert
@@ skipping 55 matching lines @@
         <item name="colorControlActivated">@color/light_active_color</item>
         <item name="colorControlNormal">@color/light_normal_color</item>
         <item name="colorPrimary">@color/light_active_color</item>
 
         <!-- Default TintedImageButton tint -->
         <item name="tint">@color/dark_mode_tint</item>
     </style>
 
     <!-- Preferences -->
     <style name="PreferencesTheme" parent="ThemeWithActionBar">
+        <item name="android:divider">@null</item>

[newt (away), 2016/02/12 22:03:49]

Does this remove the dividers all throughout preferences? If so, we should do
this as a separate change since other preference screens will need updating.

[May, 2016/02/16 17:32:06]

It was supposed to, but when I check on it now, the divider is still there. Not
sure why (I swear I had a build where there were no dividers...) but I'm
removing this bit for now.

[newt (away), 2016/02/16 23:05:01]

Strange. Once we switch to using the support library preferences
(crbug.com/585814), it may be easier to control the dividers in settings. I'd
like to update our dividers on all settings screens, since the dividers (on all
screens) have never matched the mocks.

         <item name="android:textColorLink">@color/pref_accent_color</item>
         <item name="android:textAppearanceMedium">@style/PreferenceTextAppearanceMedium</item>
         <item name="android:preferenceCategoryStyle">@style/PreferenceCategory</item>
         <item name="android:spinnerItemStyle">@style/PreferenceSpinnerItem</item>
         <item name="floatLabelTextAppearance">@style/PreferenceFloatLabelTextAppearance</item>
         <item name="floatLabelPaddingLeft">@dimen/pref_autofill_field_horizontal_padding</item>
         <item name="floatLabelPaddingRight">@dimen/pref_autofill_field_horizontal_padding</item>
         <item name="floatLabelPaddingTop">@dimen/pref_autofill_field_top_padding</item>
     </style>
     <style name="PreferenceTextAppearanceMedium">
@@ skipping 363 matching lines @@
     <style name="UpdateMenuBadge">
         <item name="android:layout_height">@dimen/menu_badge_size</item>
         <item name="android:layout_width">@dimen/menu_badge_size</item>
         <item name="android:layout_gravity">end|bottom</item>
         <item name="android:layout_marginBottom">14dp</item>
         <item name="android:focusable">false</item>
         <item name="android:importantForAccessibility">no</item>
         <item name="android:visibility">invisible</item>
     </style>
 </resources>