Add audible, muted to Tab, c.t.query, c.t.update, and c.t.onUpdated where relevant

extensions/common/value_builder.h

 // Copyright 2013 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.
 
 // This file provides a builders for DictionaryValue and ListValue.  These
 // aren't specific to extensions and could move up to base/ if there's interest
 // from other sub-projects.
 //
 // The general pattern is to write:
 //
@@ skipping 38 matching lines @@
   explicit DictionaryBuilder(const base::DictionaryValue& init);
   ~DictionaryBuilder();
 
   // Workaround to allow you to pass rvalue ExtensionBuilders by reference to
   // other functions.
   DictionaryBuilder& Pass() { return *this; }
 
   // Can only be called once, after which it's invalid to use the builder.
   scoped_ptr<base::DictionaryValue> Build() { return dict_.Pass(); }
 
+  // Get the number of elements stored in the dictionary
+  long size() const { return dict_->size(); }

[not at google - send to devlin, 2015/03/16 18:11:56]

size_t

but this change might not be necessary

+
   // Immediately serializes the current state to JSON. Can be called as many
   // times as you like.
   std::string ToJSON() const;
 
   DictionaryBuilder& Set(const std::string& path, int in_value);
   DictionaryBuilder& Set(const std::string& path, double in_value);
   DictionaryBuilder& Set(const std::string& path, const std::string& in_value);
   DictionaryBuilder& Set(const std::string& path,
                          const base::string16& in_value);
   DictionaryBuilder& Set(const std::string& path, DictionaryBuilder& in_value);
@@ skipping 31 matching lines @@
   // convert implicitly to bool.
   ListBuilder& AppendBoolean(bool in_value);
 
  private:
   scoped_ptr<base::ListValue> list_;
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_COMMON_VALUE_BUILDER_H_