Removed NOTIFICATION_BROWSER_CLOSING notification

chrome/browser/ui/browser_list.h

Index: chrome/browser/ui/browser_list.h
diff --git a/chrome/browser/ui/browser_list.h b/chrome/browser/ui/browser_list.h
index 705e423d97708612cc9059cef1158f78ee55769e..c61cffa78cb2844ccf8f9c74335f610e87118bdf 100644
--- a/chrome/browser/ui/browser_list.h
+++ b/chrome/browser/ui/browser_list.h
@@ -57,6 +57,10 @@ class BrowserList {
     return last_active_browsers_.rend();
   }
 
+  size_t currently_closing_browsers_count() const {
+    return currently_closing_browsers_.size();
+  }
+
   static BrowserList* GetInstance();
 
   // Adds or removes |browser| from the list it is associated with. The browser
@@ -82,6 +86,10 @@ class BrowserList {
   // Notifies the observers when the current active browser becomes not active.
   static void NotifyBrowserNoLongerActive(Browser* browser);
 
+  // Notifies the observers when browser close was started. This may be called
+  // more than once for a particular browser.
+  static void NotifyBrowserCloseStarted(Browser* browser);
+
   // Closes all browsers for |profile| across all desktops.
   // TODO(mlerman): Move the Profile Deletion flow to use the overloaded
   // version of this method with a callback, then remove this method.
@@ -148,6 +156,8 @@ class BrowserList {
   // A vector of the browsers in this list that have been activated, in the
   // reverse order in which they were last activated.
   BrowserVector last_active_browsers_;
+  // A vector of the browsers that are currently in the closing state.
+  BrowserVector currently_closing_browsers_;
 
   // A list of observers which will be notified of every browser addition and
   // removal across all BrowserLists.