Fix BrowserActionsBarBrowserTest.OverflowedBrowserActionPopupTestRemoval in ASan with new libc++.

chrome/browser/ui/cocoa/extensions/browser_action_button.mm

Index: chrome/browser/ui/cocoa/extensions/browser_action_button.mm
diff --git a/chrome/browser/ui/cocoa/extensions/browser_action_button.mm b/chrome/browser/ui/cocoa/extensions/browser_action_button.mm
index 18312c172ebcd6b1abbb2951942d11a82ff5a862..b36bd44fa06b6ff4bcef13a23d298424c8e1978d 100644
--- a/chrome/browser/ui/cocoa/extensions/browser_action_button.mm
+++ b/chrome/browser/ui/cocoa/extensions/browser_action_button.mm
@@ -60,6 +60,8 @@ class ToolbarActionViewDelegateBridge : public ToolbarActionViewDelegate {
   // Shows the context menu for the owning action.
   void ShowContextMenu();
 
+  void HidePopup();
+
   bool user_shown_popup_visible() const { return user_shown_popup_visible_; }
 
  private:
@@ -137,6 +139,10 @@ void ToolbarActionViewDelegateBridge::ShowContextMenu() {
                  weakFactory_.GetWeakPtr()));
 }
 
+void ToolbarActionViewDelegateBridge::HidePopup() {
+  viewController_->HidePopup();
+}
+
 content::WebContents* ToolbarActionViewDelegateBridge::GetCurrentWebContents()
     const {
   return [controller_ currentWebContents];
@@ -479,6 +485,10 @@ void ToolbarActionViewDelegateBridge::DoShowContextMenu() {
   viewControllerDelegate_->ShowContextMenu();
 }
 
+- (void)hidePopup {
+  viewControllerDelegate_->HidePopup();
+}
+
 - (NSMenu*)menu {
   // Hack: Since Cocoa doesn't support menus-running-in-menus (see also comment
   // in -rightMouseDown:), it doesn't launch the menu for an overflowed action