MD Settings: Add "Auto Open" setting to Downloads page UI.

chrome/browser/resources/settings/downloads_page/downloads_page.js

Index: chrome/browser/resources/settings/downloads_page/downloads_page.js
diff --git a/chrome/browser/resources/settings/downloads_page/downloads_page.js b/chrome/browser/resources/settings/downloads_page/downloads_page.js
index f1d1fc68f578565751ebae4bad82fe06adf3e0d3..69074bf4cc095b8ddbdb2ef44790f4675e925c44 100644
--- a/chrome/browser/resources/settings/downloads_page/downloads_page.js
+++ b/chrome/browser/resources/settings/downloads_page/downloads_page.js
@@ -18,6 +18,8 @@
 Polymer({
   is: 'settings-downloads-page',
 
+  behaviors: [WebUIListenerBehavior],
+
   properties: {
     /**
      * Preferences state.
@@ -32,6 +34,21 @@ Polymer({
      * @type {!DownloadsPageVisibility}
      */
     pageVisibility: Object,
+
+    /** @private */
+    autoOpenDownloads_: {
+      type: Boolean,
+      value: false,
+    },
+  },
+
+  /** @override */
+  attached: function() {
+    this.addWebUIListener('auto-open-downloads-changed', function(autoOpen) {
+      this.autoOpenDownloads_ = autoOpen;
+    }.bind(this));
+
+    chrome.send('initializeDownloads');

[Dan Beam, 2017/02/27 05:50:36]

don't chrome.send() directly

[tommycli, 2017/02/28 00:47:26]

Done.

   },
 
   /** @private */
@@ -57,4 +74,8 @@ Polymer({
     return path;
   },
 // </if>
+
+  onClearAutoOpenFileTypesTap_: function() {
+    chrome.send('resetAutoOpenFileTypes');

[Dan Beam, 2017/02/27 05:50:36]

use a browser proxy

[tommycli, 2017/02/28 00:47:26]

Done.

+  },
 });