[DevTools] Move network throttling to network panel.

Source/devtools/front_end/ui/Toolbar.js

Index: Source/devtools/front_end/ui/Toolbar.js
diff --git a/Source/devtools/front_end/ui/Toolbar.js b/Source/devtools/front_end/ui/Toolbar.js
index cb1e731cdaea7ba1044a2b3950290841ace97899..d16c5c287b81069986b9f6633eaec01f1702dddf 100644
--- a/Source/devtools/front_end/ui/Toolbar.js
+++ b/Source/devtools/front_end/ui/Toolbar.js
@@ -722,6 +722,14 @@ WebInspector.ToolbarComboBox.prototype = {
     },
 
     /**
+     * @return {!Array.<!Element>}
+     */
+    options: function()
+    {
+        return Array.prototype.slice.call(this._selectElement.children, 0);
+    },
+
+    /**
      * @param {!Element} option
      */
     addOption: function(option)