Tabs API is usable without tabs permission.

chrome/browser/ui/views/ash/panel_view_aura.cc

 // 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.
 
 #include "chrome/browser/ui/views/ash/panel_view_aura.h"
 
 #include "ash/wm/panel_frame_view.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/extensions/api/tabs/tabs_constants.h"
 #include "chrome/browser/extensions/extension_function_dispatcher.h"
@@ skipping 171 matching lines @@
 class PanelExtensionWindowController : public extensions::WindowController {
  public:
   PanelExtensionWindowController(PanelViewAura* panel_view,
                                  PanelHost* panel_host);
   virtual ~PanelExtensionWindowController();
 
   // Overriden from extensions::WindowController:
   virtual int GetWindowId() const OVERRIDE;
   virtual std::string GetWindowTypeText() const OVERRIDE;
   virtual base::DictionaryValue* CreateWindowValue() const OVERRIDE;
-  virtual base::DictionaryValue* CreateWindowValueWithTabs() const OVERRIDE;
+  virtual base::DictionaryValue* CreateWindowValueWithTabs(
+      const extensions::Extension* extension) const OVERRIDE;
   virtual bool CanClose(Reason* reason) const OVERRIDE;
   virtual void SetFullscreenMode(bool is_fullscreen,
                                  const GURL& extension_url) const OVERRIDE;
   virtual bool IsVisibleToExtension(
       const extensions::Extension* extension) const OVERRIDE;
 
  private:
   PanelViewAura* panel_view_;
   PanelHost* panel_host_;
 
@@ skipping 21 matching lines @@
   return keys::kWindowTypeValuePanel;
 }
 
 base::DictionaryValue*
 PanelExtensionWindowController::CreateWindowValue() const {
   DictionaryValue* result = extensions::WindowController::CreateWindowValue();
   return result;
 }
 
 base::DictionaryValue*
-PanelExtensionWindowController::CreateWindowValueWithTabs() const {
+PanelExtensionWindowController::CreateWindowValueWithTabs(
+    const extensions::Extension* extension) const {
   DictionaryValue* result = CreateWindowValue();
 
   // TODO(stevenjb): Implement tab interface for Aura panels.
   // Currently there is no mechanism to get a tab id without an associated
   // TabContents. We will need to either add a TabContents for
   // panels, or add another mechanism for tracking tabs. crbug.com/115532.
 
   return result;
 }
 
@@ skipping 204 matching lines @@
 }
 
 void PanelViewAura::FlashFrame(bool flash) {
   // TODO(stevenjb): Implement
   NOTIMPLEMENTED();
 }
 
 bool PanelViewAura::IsAlwaysOnTop() const {
   return true;
 }