Lots of small fixes to help wire things together for the 0.8 upgrade.

chrome/browser/resources/settings/prefs/prefs.js

 /* Copyright 2015 The Chromium Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file. */
 
 /**
  * @fileoverview
  * 'cr-settings-prefs' is an element which serves as a model for
  * interaction with settings which are stored in Chrome's
  * Preferences.
  *
@@ skipping 65 matching lines @@
       prefs.forEach(function(prefObj) {
         let root = this.settings;
         let tokens = prefObj.key.split('.');
 
         assert(tokens.length > 0);
 
         for (let i = 0; i < tokens.length; i++) {
           let token = tokens[i];
 
           if (!root.hasOwnProperty(token)) {
-            root[token] = {};
+            let path = 'settings.' + tokens.slice(0, i + 1).join('.');
+            this.setPathValue(path, {});
           }
           root = root[token];
         }
 
         // NOTE: Do this copy rather than just a re-assignment, so that the
         // ObjectObserver fires.

[michaelpg, 2015/05/13 19:38:30]

is this logic still valid, or can we just use this.setPathValue(root, prefObj)?

[Jeremy Klein, 2015/05/13 21:13:56]

Hard to say for sure until all this binding logic is working correctly. My gut
feeling is that we'll still need this, but we can revisit it once the binding
issue is fully resolved.

         for (let objKey in prefObj) {
-          root[objKey] = prefObj[objKey];
+          let path = 'settings.' + prefObj.key + '.' + objKey;
+          this.setPathValue(path, prefObj[objKey]);
         }
 
         if (shouldObserve) {
           let keyObserver = new ObjectObserver(root);
           keyObserver.open(
               this.propertyChangeCallback_.bind(this, prefObj.key));
         }
       }, this);
     },
 
@@ skipping 20 matching lines @@
 
         chrome.settingsPrivate.setPref(
             propertyPath,
             newValue,
             /* pageId */ '',
             /* callback */ function() {});
       }
     },
   });
 })();