MD Settings: Internet: Add 'forget' button, more fixes.

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

 <link rel="import" href="chrome://resources/html/polymer.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/neon-animation/neon-animatable.html">
 <link rel="import" href="chrome://resources/cr_elements/network/cr_onc_types.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"></style>
     <settings-animated-pages id="pages" current-route="{{currentRoute}}"
         section="internet">
       <neon-animatable id="main">
         <network-summary on-show-detail="onShowDetail_"
             default-network="{{defaultNetwork}}"
             on-show-known-networks="onShowKnownNetworks_"
             networking-private="[[networkingPrivate]]">
         </network-summary>
       </neon-animatable>
       <template is="dom-if" name="network-detail">
         <settings-subpage page-title="$i18n{internetDetailPageTitle}">
           <settings-internet-detail-page
               guid="[[detailGuid]]"
               default-network="[[defaultNetwork]]"
-              on-close="onBackTap_"
               networking-private="[[networkingPrivate]]">
           </settings-internet-detail-page>
         </settings-subpage>
       </template>
       <template is="dom-if" name="known-networks">
-        <settings-subpage
-            page-title="$i18n{internetKnownNetworksPageTitle}">
+        <settings-subpage page-title="$i18n{internetKnownNetworksPageTitle}">
           <settings-internet-known-networks-page
               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>