Drive extension functions from ExtensionFunction::Run. The

apps/shell/browser/shell_app_window_api.h

Index: apps/shell/browser/shell_app_window_api.h
diff --git a/apps/shell/browser/shell_app_window_api.h b/apps/shell/browser/shell_app_window_api.h
index d805dff033e73331d6f740d164525b73a76aafa3..bb5eb375bc0c411b40d0cf0fc2c5bea20aa3d18e 100644
--- a/apps/shell/browser/shell_app_window_api.h
+++ b/apps/shell/browser/shell_app_window_api.h
@@ -13,7 +13,7 @@ namespace extensions {
 // A simplified implementation of the chrome.app.window.create() function for
 // app_shell. Opens a fullscreen window and invokes the window callback. Most
 // of the response is stub data, but the JS contentWindow is valid.
-class ShellAppWindowCreateFunction : public UIThreadExtensionFunction {
+class ShellAppWindowCreateFunction : public AsyncExtensionFunction {
  public:
   ShellAppWindowCreateFunction();
 
@@ -23,7 +23,7 @@ class ShellAppWindowCreateFunction : public UIThreadExtensionFunction {
 
  private:
   virtual ~ShellAppWindowCreateFunction();
-  virtual bool RunImpl() OVERRIDE;
+  virtual bool RunAsync() OVERRIDE;
 };
 
 }  // namespace extensions