Page actions behave as disableable browser actions when script badges are enabled.

chrome/browser/ui/views/browser_action_view.h

Index: chrome/browser/ui/views/browser_action_view.h
diff --git a/chrome/browser/ui/views/browser_action_view.h b/chrome/browser/ui/views/browser_action_view.h
index 93b32ae5fee915f8d4c67f4c70ccf22b93f06d04..10a36c46696f068ec41941cae0bd85d88296aa6e 100644
--- a/chrome/browser/ui/views/browser_action_view.h
+++ b/chrome/browser/ui/views/browser_action_view.h
@@ -89,6 +89,11 @@ class BrowserActionButton : public views::MenuButton,
   void SetButtonPushed();
   void SetButtonNotPushed();
 
+  // Whether the browser action is enabled on this tab. Note that we cannot use
+  // the built-in views enabled/SetEnabled because disabled views cannot
+  // receive drag events.
+  bool IsEnabled(int tab_id) const;
+
  protected:
   // Overridden from views::View:
   virtual void ViewHierarchyChanged(bool is_add,