[Extensions] Fix hiding browser actions without the toolbar redesign

chrome/browser/ui/views/toolbar/chevron_menu_button.cc

Index: chrome/browser/ui/views/toolbar/chevron_menu_button.cc
diff --git a/chrome/browser/ui/views/toolbar/chevron_menu_button.cc b/chrome/browser/ui/views/toolbar/chevron_menu_button.cc
index 963f4629354c504b34321029a2e63f87355672e0..69b207a671aa2c80f4a9b3a6873c9db727f2e355 100644
--- a/chrome/browser/ui/views/toolbar/chevron_menu_button.cc
+++ b/chrome/browser/ui/views/toolbar/chevron_menu_button.cc
@@ -212,6 +212,7 @@ void ChevronMenuButton::MenuController::RunMenu(views::Widget* window) {
 }
 
 void ChevronMenuButton::MenuController::CloseMenu() {
+  icon_updaters_.clear();

[Devlin, 2015/10/27 21:15:02]

Note: added this so that updaters were cleared when the menu's closed, since it
might be closed as a part of removing an action.

   menu_->Cancel();
 }