MD Settings: About page, hooking up channel switcher dialog.

chrome/browser/resources/settings/about_page/detailed_build_info.html

Index: chrome/browser/resources/settings/about_page/detailed_build_info.html
diff --git a/chrome/browser/resources/settings/about_page/detailed_build_info.html b/chrome/browser/resources/settings/about_page/detailed_build_info.html
index 5fc6e841e060c4e43f38122030613aa36215646c..e31872cd81cc760d5443ab693dd7f705f37f8566 100644
--- a/chrome/browser/resources/settings/about_page/detailed_build_info.html
+++ b/chrome/browser/resources/settings/about_page/detailed_build_info.html
@@ -3,7 +3,9 @@
 <link rel="import" href="/about_page/channel_switcher_dialog.html">
 <link rel="import" href="/i18n_setup.html"
 <link rel="import" href="/settings_shared_css.html">
+<link rel="import" href="chrome://resources/cr_elements/icons.html">
 <link rel="import" href="chrome://resources/html/i18n_behavior.html">
+<link rel="import" href="chrome://resources/polymer/v1_0/iron-icon/iron-icon.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-button/paper-button.html">
 
 <dom-module id="settings-detailed-build-info">
@@ -31,8 +33,15 @@
         <div class="secondary">[[currentlyOnChannelText_]]</div>
       </div>
       <div class="secondary-action">
-        <paper-button class="secondary-button">Change channel</paper-button>
+        <paper-button on-tap="onChangeChannelTap_"
+            disabled="[[!canChangeChannel_]]">
+          $i18n{aboutChangeChannel}
+        </paper-button>
+        <iron-icon icon="cr:domain" hidden="[[canChangeChannel_]]"</iron-icon>
       </div>
+      <template is="dom-if" if="[[showChannelSwitcherDialog_]]" restamp>
+        <settings-channel-switcher-dialog></settings-channel-switcher-dialog>
+      </template>
     </div>
     <div class="settings-box two-line"
         hidden$="[[!shouldShowVersion_(versionInfo_.arcVersion)]]">