Remove NOTIFICATION_EXTENSION_PAGE_ACTIONS_UPDATED

chrome/browser/extensions/api/extension_action/extension_action_api.h

Index: chrome/browser/extensions/api/extension_action/extension_action_api.h
diff --git a/chrome/browser/extensions/api/extension_action/extension_action_api.h b/chrome/browser/extensions/api/extension_action/extension_action_api.h
index ac29d1f786282b2c3bf8109ee37bdda65f991500..afd80bec59a974efd855deb0e19f3ffb1e55b924 100644
--- a/chrome/browser/extensions/api/extension_action/extension_action_api.h
+++ b/chrome/browser/extensions/api/extension_action/extension_action_api.h
@@ -44,7 +44,11 @@ class ExtensionActionAPI : public BrowserContextKeyedAPI {
     virtual void OnExtensionActionUpdated(
         ExtensionAction* extension_action,
         content::WebContents* web_contents,
-        content::BrowserContext* browser_context) = 0;
+        content::BrowserContext* browser_context) {}
+
+    // Called when the page actions have been refreshed do to a possible change
+    // in count or visibility.
+    virtual void OnPageActionsUpdated(content::WebContents* web_contents) {}
 
     // Called when the ExtensionActionAPI is shutting down, giving observers a
     // chance to unregister themselves if there is not a definitive lifecycle.
@@ -86,14 +90,19 @@ class ExtensionActionAPI : public BrowserContextKeyedAPI {
   void AddObserver(Observer* observer);
   void RemoveObserver(Observer* observer);
 
+  // Notifies that there has been a change in the given |extension_action|.
   void NotifyChange(ExtensionAction* extension_action,
                     content::WebContents* web_contents,
                     content::BrowserContext* browser_context);
 
   // Clears the values for all ExtensionActions for the tab associated with the
-  // given |web_contents|.
+  // given |web_contents| (and signals that page actions changed).
   void ClearAllValuesForTab(content::WebContents* web_contents);
 
+  // Notifies that the current set of page actions for |web_contents| has
+  // changed, and signals the browser to update.
+  void NotifyPageActionsChanged(content::WebContents* web_contents);
+
  private:
   friend class BrowserContextKeyedAPIFactory<ExtensionActionAPI>;