1 files changed, 2 insertions, 2 deletions
diff --git a/chrome/browser/ui/browser_list.h b/chrome/browser/ui/browser_list.h
index d8fbb63..095f66a 100644
--- a/chrome/browser/ui/browser_list.h
+++ b/chrome/browser/ui/browser_list.h
@@ -54,10 +54,10 @@ class BrowserList {
   class Observer {
    public:
     // Called immediately after a browser is added to the list
-    virtual void OnBrowserAdded(Browser* browser) = 0;
+    virtual void OnBrowserAdded(Browser* browser) {}
 
     // Called immediately after a browser is removed from the list
-    virtual void OnBrowserRemoved(Browser* browser) = 0;
+    virtual void OnBrowserRemoved(Browser* browser) {}
 
     // Called immediately after a browser is set active (SetLastActive)
     virtual void OnBrowserSetLastActive(Browser* browser) {}