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

chrome/browser/ui/apps/chrome_app_window_client.cc

Index: chrome/browser/ui/apps/chrome_app_window_client.cc
diff --git a/chrome/browser/ui/apps/chrome_app_window_client.cc b/chrome/browser/ui/apps/chrome_app_window_client.cc
index 3349e24d5a93777cfb2b33eefe0d48f43b588603..d1ed5ddcd9f2dab3dd6a4bfc7403a76700e5aac2 100644
--- a/chrome/browser/ui/apps/chrome_app_window_client.cc
+++ b/chrome/browser/ui/apps/chrome_app_window_client.cc
@@ -4,6 +4,9 @@
 
 #include "chrome/browser/ui/apps/chrome_app_window_client.h"
 
+#include <memory>
+
+#include "base/memory/ptr_util.h"
 #include "base/memory/singleton.h"
 #include "build/build_config.h"
 #include "chrome/browser/devtools/devtools_window.h"
@@ -13,6 +16,10 @@
 #include "extensions/common/extension.h"
 #include "extensions/common/features/feature_channel.h"
 
+#if defined(OS_CHROMEOS)
+#include "chrome/browser/chromeos/lock_screen_apps/state_controller.h"
+#endif
+
 // TODO(jamescook): We probably shouldn't compile this class at all on Android.
 // See http://crbug.com/343612
 #if !defined(OS_ANDROID)
@@ -43,11 +50,39 @@ extensions::AppWindow* ChromeAppWindowClient::CreateAppWindow(
 #endif
 }
 
+extensions::AppWindow*
+ChromeAppWindowClient::CreateAppWindowForLockScreenAction(
+    content::BrowserContext* context,
+    const extensions::Extension* extension,
+    extensions::api::app_runtime::ActionType action) {
+#if defined(OS_CHROMEOS)
+  if (!lock_screen_apps::StateController::IsEnabled())
+    return nullptr;
+
+  if (!lock_screen_apps::StateController::Get()->CanCreateAppWindowForAction(
+          context, extension, action)) {
+    return nullptr;
+  }
+
+  extensions::AppWindow* window = CreateAppWindow(context, extension);
+
+  if (!lock_screen_apps::StateController::Get()->RegisterAppWindowForAction(
+          window, action)) {
+    NOTREACHED() << "Failed to register app window for lock screen action";
+    return nullptr;
+  }
+
+  return window;
+#else
+  return nullptr;
+#endif
+}
+
 extensions::NativeAppWindow* ChromeAppWindowClient::CreateNativeAppWindow(
     extensions::AppWindow* window,
     extensions::AppWindow::CreateParams* params) {
 #if defined(OS_ANDROID)
-  return NULL;
+  return nullptr;
 #else
   return CreateNativeAppWindowImpl(window, *params);
 #endif