Remove "API proposal for chrome.app.window to intercept all keys."

extensions/browser/app_window/app_window.cc

Index: extensions/browser/app_window/app_window.cc
diff --git a/extensions/browser/app_window/app_window.cc b/extensions/browser/app_window/app_window.cc
index b6d7754c56a47124255bc3365a36b470696500b1..b2bfeb0b3bf02a719549aee1f59bdb2c96ee83fa 100644
--- a/extensions/browser/app_window/app_window.cc
+++ b/extensions/browser/app_window/app_window.cc
@@ -705,10 +705,6 @@ void AppWindow::RestoreAlwaysOnTop() {
     UpdateNativeAlwaysOnTop();
 }
 
-void AppWindow::SetInterceptAllKeys(bool want_all_keys) {
-  native_app_window_->SetInterceptAllKeys(want_all_keys);
-}
-
 void AppWindow::WindowEventsReady() {
   can_send_events_ = true;
   SendOnWindowShownIfShown();