Start using the controller in app's view.

extensions/components/native_app_window/native_app_window_views.cc

Index: extensions/components/native_app_window/native_app_window_views.cc
diff --git a/extensions/components/native_app_window/native_app_window_views.cc b/extensions/components/native_app_window/native_app_window_views.cc
index ed415f1cbd55a74c825cc0c8224cf21fa561be2f..46f6203bb012b59a8c5c2061ee5d54cc3779dc43 100644
--- a/extensions/components/native_app_window/native_app_window_views.cc
+++ b/extensions/components/native_app_window/native_app_window_views.cc
@@ -378,6 +378,13 @@ void NativeAppWindowViews::SetInterceptAllKeys(bool want_all_keys) {
   // Stub implementation. See also ChromeNativeAppWindowViews.
 }
 
+bool NativeAppWindowViews::PreHandleKeyboardEvent(
+    content::WebContents* source,
+    const content::NativeWebKeyboardEvent& event,
+    bool* is_keyboard_shortcut) {
+  return false;
+}
+
 void NativeAppWindowViews::HandleKeyboardEvent(
     const content::NativeWebKeyboardEvent& event) {
   unhandled_keyboard_event_handler_.HandleKeyboardEvent(event,