MD Settings: Switch cr_network_icon to use svg icons

chrome/browser/resources/settings/internet_page/internet_page.html

 <link rel="import" href="chrome://resources/cr_elements/cr_expand_button/cr_expand_button.html">
 <link rel="import" href="chrome://resources/cr_elements/icons.html">
 <link rel="import" href="chrome://resources/cr_elements/network/cr_onc_types.html">
 <link rel="import" href="chrome://resources/html/i18n_behavior.html">
 <link rel="import" href="chrome://resources/html/polymer.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/iron-icon/iron-icon.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/neon-animation/neon-animatable.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-icon-button/paper-icon-button-light.html">
 <link rel="import" href="/prefs/prefs.html">
 <link rel="import" href="/route.html">
 <link rel="import" href="/settings_page/settings_animated_pages.html">
 <link rel="import" href="/settings_page/settings_subpage.html">
 <link rel="import" href="/settings_shared_css.html">
 <link rel="import" href="internet_detail_page.html">
 <link rel="import" href="internet_known_networks_page.html">
 <link rel="import" href="network_summary.html">
 
 <dom-module id="settings-internet-page">
   <template>
     <style include="settings-shared">
       div.add-no-icon {
         margin-left: 36px
       }
 
       iron-icon {
         -webkit-margin-end: 12px;
+        -webkit-margin-start: 4px;
         height: 24px;
         width: 24px;
       }
     </style>
     <settings-animated-pages id="pages" section="internet">
       <neon-animatable route-path="default">
         <network-summary on-show-detail="onShowDetail_"
             default-network="{{defaultNetwork}}"
             on-show-known-networks="onShowKnownNetworks_"
             networking-private="[[networkingPrivate]]">
@@ skipping 43 matching lines @@
               network-type="[[knownNetworksType_]]"
               on-show-detail="onShowDetail_"
               networking-private="[[networkingPrivate]]">
           </settings-internet-known-networks-page>
         </settings-subpage>
       </template>
     </settings-animated-pages>
   </template>
   <script src="internet_page.js"></script>
 </dom-module>