Removed NOTIFICATION_BROWSER_CLOSING notification

chrome/browser/ui/browser_list.cc

Index: chrome/browser/ui/browser_list.cc
diff --git a/chrome/browser/ui/browser_list.cc b/chrome/browser/ui/browser_list.cc
index cee9366c92c18bc9af240d1f9aae48b692539cab..cf09bbecc5af0d2313fd0090cbd424ae4cba8273 100644
--- a/chrome/browser/ui/browser_list.cc
+++ b/chrome/browser/ui/browser_list.cc
@@ -83,6 +83,7 @@ void BrowserList::RemoveBrowser(Browser* browser) {
   // Remove |browser| from the appropriate list instance.
   BrowserList* browser_list = GetInstance();
   RemoveBrowserFrom(browser, &browser_list->last_active_browsers_);
+  RemoveBrowserFrom(browser, &browser_list->currently_closing_browsers_);
 
   content::NotificationService::current()->Notify(
       chrome::NOTIFICATION_BROWSER_CLOSED,
@@ -249,6 +250,17 @@ void BrowserList::NotifyBrowserNoLongerActive(Browser* browser) {
 }
 
 // static
+void BrowserList::NotifyBrowserCloseStarted(Browser* browser) {
+  BrowserVector* currently_closing_browsers =
+      &GetInstance()->currently_closing_browsers_;
+  RemoveBrowserFrom(browser, currently_closing_browsers);
+  currently_closing_browsers->push_back(browser);
+
+  for (chrome::BrowserListObserver& observer : observers_.Get())
+    observer.OnBrowserCloseStarted(browser);
+}
+
+// static
 bool BrowserList::IsIncognitoSessionActive() {
   for (auto* browser : *BrowserList::GetInstance()) {
     if (browser->profile()->IsOffTheRecord())