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

extensions/browser/app_window/app_window_client.h

Index: extensions/browser/app_window/app_window_client.h
diff --git a/extensions/browser/app_window/app_window_client.h b/extensions/browser/app_window/app_window_client.h
index f026d809760ca1319a584e1bd4fabb56adbbbb2c..98a09d8ed0b914bedaf181b405038f1573d1cff1 100644
--- a/extensions/browser/app_window/app_window_client.h
+++ b/extensions/browser/app_window/app_window_client.h
@@ -7,6 +7,7 @@
 
 #include "base/callback_forward.h"
 #include "extensions/browser/app_window/app_window.h"
+#include "extensions/common/api/app_runtime.h"
 
 namespace content {
 class BrowserContext;
@@ -30,6 +31,15 @@ class AppWindowClient {
   virtual AppWindow* CreateAppWindow(content::BrowserContext* context,
                                      const Extension* extension) = 0;
 
+  // Creates a new AppWindow for |extension| as lock screen action handler for
+  // |action|. This should be used to create windows that will be used to handle
+  // |action| on lock screen. The method should return null window if the app
+  // was not requested to handle the action.
+  virtual AppWindow* CreateAppWindowForLockScreenAction(
+      content::BrowserContext* context,
+      const Extension* extension,
+      api::app_runtime::ActionType action) = 0;
+
   // Creates a new extensions::NativeAppWindow for |window|.
   virtual NativeAppWindow* CreateNativeAppWindow(
       AppWindow* window,