Changes in app.window and app.runtime to support lock screen note taking

extensions/shell/browser/shell_app_window_client.cc

Index: extensions/shell/browser/shell_app_window_client.cc
diff --git a/extensions/shell/browser/shell_app_window_client.cc b/extensions/shell/browser/shell_app_window_client.cc
index 8ad167073386540661e6eec64a2cf449072a70dc..674110a0d5eacc91b0862cf095e2ce0309bbb29e 100644
--- a/extensions/shell/browser/shell_app_window_client.cc
+++ b/extensions/shell/browser/shell_app_window_client.cc
@@ -23,6 +23,13 @@ AppWindow* ShellAppWindowClient::CreateAppWindow(
   return DesktopController::instance()->CreateAppWindow(context, extension);
 }
 
+AppWindow* ShellAppWindowClient::CreateAppWindowForLockScreenAction(
+    content::BrowserContext* context,
+    const Extension* extension,
+    api::app_runtime::ActionType action) {
+  return nullptr;
+}
+
 void ShellAppWindowClient::OpenDevToolsWindow(
     content::WebContents* web_contents,
     const base::Closure& callback) {