Trigger a tab updated event if the favicon URL changes.

chrome/browser/extensions/browser_event_router.h

Index: chrome/browser/extensions/browser_event_router.h
diff --git a/chrome/browser/extensions/browser_event_router.h b/chrome/browser/extensions/browser_event_router.h
index 24aed8667b0d258b64762dd228dfe438230eeace..f7d0c70725cf8326d9b7f95b8f192a01fe90a49e 100644
--- a/chrome/browser/extensions/browser_event_router.h
+++ b/chrome/browser/extensions/browser_event_router.h
@@ -97,6 +97,10 @@ class BrowserEventRouter : public TabStripModelObserver,
   // and Observe/NAV_ENTRY_COMMITTED.
   void TabUpdated(content::WebContents* contents, bool did_navigate);
 
+  // Triggers a tab updated event if the favicon URL changes.
+  void FaviconUrlUpdated(content::WebContents* contents,
+                         const bool* icon_url_changed);
+
   // The DispatchEvent methods forward events to the |profile|'s event router.
   // The BrowserEventRouter listens to events for all profiles,
   // so we avoid duplication by dropping events destined for other profiles.