A sidebar created by the extension.

class ExtensionSidebarPane extends ChromeObject {
 ExtensionSidebarPane();
 ExtensionSidebarPane.fromProxy(JsObject jsProxy): super.fromProxy(jsProxy);

 /**
  * Sets the height of the sidebar.
  * 
  * [height] A CSS-like size specification, such as `'100px'` or `'12ex'`.
  */
 void setHeight(String height) {
   jsProxy.callMethod('setHeight', [height]);
 }

 /**
  * Sets an expression that is evaluated within the inspected page. The result
  * is displayed in the sidebar pane.
  * 
  * [expression] An expression to be evaluated in context of the inspected
  * page. JavaScript objects and DOM nodes are displayed in an expandable tree
  * similar to the console/watch.
  * 
  * [rootTitle] An optional title for the root of the expression tree.
  */
 Future setExpression(String expression, [String rootTitle]) {
   var completer = new ChromeCompleter.noArgs();
   jsProxy.callMethod('setExpression', [expression, rootTitle, completer.callback]);
   return completer.future;
 }

 /**
  * Sets a JSON-compliant object to be displayed in the sidebar pane.
  * 
  * [jsonObject] An object to be displayed in context of the inspected page.
  * Evaluated in the context of the caller (API client).
  * 
  * [rootTitle] An optional title for the root of the expression tree.
  */
 Future setObject(String jsonObject, [String rootTitle]) {
   var completer = new ChromeCompleter.noArgs();
   jsProxy.callMethod('setObject', [jsonObject, rootTitle, completer.callback]);
   return completer.future;
 }

 /**
  * Sets an HTML page to be displayed in the sidebar pane.
  * 
  * [path] Relative path of an extension page to display within the sidebar.
  */
 void setPage(String path) {
   jsProxy.callMethod('setPage', [path]);
 }
}