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

chrome/browser/ui/views/browser_action_view.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_UI_VIEWS_BROWSER_ACTION_VIEW_H_
 #define CHROME_BROWSER_UI_VIEWS_BROWSER_ACTION_VIEW_H_
 
 #include <string>
 
 #include "chrome/browser/extensions/image_loading_tracker.h"
@@ skipping 70 matching lines @@
                                bool is_mouse_gesture) OVERRIDE;
 
   // Overridden from ui::AcceleratorTarget.
   virtual bool AcceleratorPressed(const ui::Accelerator& accelerator) OVERRIDE;
 
   // Notifications when to set button state to pushed/not pushed (for when the
   // popup/context menu is hidden or shown by the container).
   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

[sky, 2012/07/16 15:43:46]

cannot -> do not

[Yoyo Zhou, 2012/07/16 17:45:45]

Done.

+  // receive drag events.
+  bool IsEnabled(int tab_id) const;
+
  protected:
   // Overridden from views::View:
   virtual void ViewHierarchyChanged(bool is_add,
                                     View* parent,
                                     View* child) OVERRIDE;
 
  private:
   virtual ~BrowserActionButton();
 
   // Register an extension command if the extension has an active one.
@@ skipping 66 matching lines @@
   // The container for this view.
   BrowserActionsContainer* panel_;
 
   // The button this view contains.
   BrowserActionButton* button_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserActionView);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_BROWSER_ACTION_VIEW_H_