chrome.tabs.onUpdated doesn't called with 'loading' twice.

chrome/browser/extensions/api/tabs/tabs_event_router.h

Index: chrome/browser/extensions/api/tabs/tabs_event_router.h
diff --git a/chrome/browser/extensions/api/tabs/tabs_event_router.h b/chrome/browser/extensions/api/tabs/tabs_event_router.h
index 45a63c39683fe3b3f86c9ce03bd1479e82adfe4e..a949d889a5419b5c4b1e0264dea2edb4dc3e58d5 100644
--- a/chrome/browser/extensions/api/tabs/tabs_event_router.h
+++ b/chrome/browser/extensions/api/tabs/tabs_event_router.h
@@ -14,6 +14,7 @@
 #include "chrome/browser/extensions/api/tabs/tabs_api.h"
 #include "chrome/browser/ui/browser_list_observer.h"
 #include "chrome/browser/ui/tabs/tab_strip_model_observer.h"
+#include "chrome/common/extensions/api/tabs.h"
 #include "components/favicon/core/favicon_driver_observer.h"
 #include "components/ui/zoom/zoom_observer.h"
 #include "content/public/browser/notification_registrar.h"
@@ -94,7 +95,7 @@ class TabsEventRouter : public TabStripModelObserver,
 
   // Internal processing of tab updated events. Is called by both TabChangedAt
   // and Observe/NAV_ENTRY_COMMITTED.
-  void TabUpdated(content::WebContents* contents, bool did_navigate);
+  void TabUpdated(content::WebContents* contents, api::tabs::TabStatus status);
 
   // Triggers a tab updated event if the favicon URL changes.
   void FaviconUrlUpdated(content::WebContents* contents);
@@ -162,6 +163,10 @@ class TabsEventRouter : public TabStripModelObserver,
     // should be sent.
     base::DictionaryValue* DidNavigate(const content::WebContents* contents);
 
+    // Update URL without a state-change. Returns NULL if the URL of |contents|
+    // is same with current URL.
+    base::DictionaryValue* UpdateUrl(const content::WebContents* contents);
+
    private:
     // Whether we are waiting to fire the 'complete' status change. This will
     // occur the first time the WebContents stops loading after the