Settings Rewrite: Make a common settings-section component.

chrome/browser/resources/settings/basic_page/basic_page.html

 <link rel="import" href="chrome://resources/polymer/v1_0/polymer/polymer.html">
 <link rel="import" href="chrome://md-settings/appearance_page/appearance_page.html">
 <link rel="import" href="chrome://md-settings/internet_page/internet_page.html">
 <link rel="import" href="chrome://md-settings/search_page/search_page.html">
 <link rel="import" href="chrome://md-settings/users_page/users_page.html">
 
 <dom-module id="cr-settings-basic-page">
-  <link rel="import" type="css"
-      href="chrome://md-settings/settings_page/settings_page.css">
   <template>
 <if expr="chromeos">
     <cr-settings-internet-page route="internet">

[michaelpg, 2015/07/21 22:04:01]

So for example, I would put here:

<paper-material route="internet">
  <cr-settings-internet-page>
  </cr-settings-internet-page>
</paper-material>

etc. for the below. When we decide these should look different we can just
find/replace in this one file (and advanced_page.html).

The way these sections should look (the size & shadow of the paper-material, the
margins between each section) can be defined by a CSS file shared by basic-page
and advanced-page.

[tommycli, 2015/07/22 19:06:42]

Done.

     </cr-settings-internet-page>
 </if>
     <cr-settings-appearance-page prefs="{{prefs}}" route="appearance">
     </cr-settings-appearance-page>
     <cr-settings-search-page route="search"></cr-settings-search-page>
     <cr-settings-users-page prefs="{{prefs}}" route="users">
     </cr-settings-users-page>
   </template>
   <script src="basic_page.js"></script>
 </dom-module>