Update BaseBubbleController's dealloc function to use

chrome/browser/ui/cocoa/website_settings/permission_bubble_controller.mm

Index: chrome/browser/ui/cocoa/website_settings/permission_bubble_controller.mm
diff --git a/chrome/browser/ui/cocoa/website_settings/permission_bubble_controller.mm b/chrome/browser/ui/cocoa/website_settings/permission_bubble_controller.mm
index 9b57585f54115f7b6386b460fd17ad14f4c5e206..24c36a2a55202bd957ca31c4cdc1bd879e6a74b8 100644
--- a/chrome/browser/ui/cocoa/website_settings/permission_bubble_controller.mm
+++ b/chrome/browser/ui/cocoa/website_settings/permission_bubble_controller.mm
@@ -254,6 +254,10 @@ class MenuDelegate : public ui::SimpleMenuModel::Delegate {
 }
 
 - (void)windowWillClose:(NSNotification*)notification {
+  [[NSNotificationCenter defaultCenter]
+      removeObserver:self
+                name:NSWindowDidMoveNotification
+              object:nil];
   bridge_->OnBubbleClosing();
   [super windowWillClose:notification];
 }