Move Extension into extensions namespace

chrome/browser/extensions/extension_icon_manager_unittest.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 "base/json/json_file_value_serializer.h"
 #include "base/message_loop.h"
 #include "base/path_service.h"
 #include "base/values.h"
 #include "chrome/browser/extensions/extension_icon_manager.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/extensions/extension.h"
 #include "chrome/common/extensions/extension_resource.h"
 #include "content/test/test_browser_thread.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/gfx/skia_util.h"
 
 using content::BrowserThread;
+using extensions::Extension;
 
 // Our test class that takes care of managing the necessary threads for loading
 // extension icons, and waiting for those loads to happen.
 class ExtensionIconManagerTest : public testing::Test {
  public:
   ExtensionIconManagerTest() :
       unwaited_image_loads_(0),
       waiting_(false),
       ui_thread_(BrowserThread::UI, &ui_loop_),
       file_thread_(BrowserThread::FILE),
@@ skipping 144 matching lines @@
   // Now re-load the icon - we should get the same result bitmap (and not the
   // default icon).
   icon_manager.LoadIcon(extension.get());
   WaitForImageLoad();
   SkBitmap second_icon = icon_manager.GetIcon(extension->id());
   EXPECT_FALSE(gfx::BitmapsAreEqual(second_icon, default_icon));
 
   EXPECT_TRUE(gfx::BitmapsAreEqual(first_icon, second_icon));
 }
 #endif