Move Extension into extensions namespace

chrome/browser/ui/panels/base_panel_browser_test.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_PANELS_BASE_PANEL_BROWSER_TEST_H_
 #define CHROME_BROWSER_UI_PANELS_BASE_PANEL_BROWSER_TEST_H_
 #pragma once
 
 #include "base/values.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 74 matching lines @@
   void WaitForPanelAdded(Panel* panel);
   void WaitForPanelRemoved(Panel* panel);
   void WaitForPanelActiveState(Panel* panel, ActiveState state);
   void WaitForWindowSizeAvailable(Panel* panel);
   void WaitForBoundsAnimationFinished(Panel* panel);
   void WaitForExpansionStateChanged(Panel* panel,
                                     Panel::ExpansionState expansion_state);
 
   void CreateTestTabContents(Browser* browser);
 
-  scoped_refptr<Extension> CreateExtension(const FilePath::StringType& path,
-                                           Extension::Location location,
-                                           const DictionaryValue& extra_value);
+  scoped_refptr<extensions::Extension> CreateExtension(
+      const FilePath::StringType& path,
+      extensions::Extension::Location location,
+      const DictionaryValue& extra_value);
 
   static void MoveMouse(const gfx::Point& position);
   void CloseWindowAndWait(Browser* browser);
   static std::string MakePanelName(int index);
 
   // |primary_screen_area| must contain |work_area|. If empty rect is passed
   // to |work_area|, it will be set to same as |primary_screen_area|.
   void SetTestingAreas(const gfx::Rect& primary_screen_area,
                        const gfx::Rect& work_area);
 
   MockDisplaySettingsProvider* mock_display_settings_provider() const {
     return mock_display_settings_provider_;
   }
 
   // Some tests might not want to use the mock version.
   void disable_display_settings_mock() {
     mock_display_settings_enabled_ = false;
   }
 
   static const FilePath::CharType* kTestDir;
 
  private:
   // Passed to and owned by PanelManager.
   MockDisplaySettingsProvider* mock_display_settings_provider_;
 
   bool mock_display_settings_enabled_;
 };
 
 #endif  // CHROME_BROWSER_UI_PANELS_BASE_PANEL_BROWSER_TEST_H_