Move Extension into extensions namespace

chrome/browser/extensions/extension_tabs_test.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/extensions/extension_tabs_module.h"
 
 #include <string>
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 229 matching lines @@
     EXPECT_TRUE(result_window->GetList(keys::kTabsKey, &tabs));
   }
   // The returned ids should contain all the current browser instance ids.
   EXPECT_EQ(window_ids, result_ids);
 }
 
 IN_PROC_BROWSER_TEST_F(ExtensionTabsTest, UpdateNoPermissions) {
   // The test empty extension has no permissions, therefore it should not get
   // tab data in the function result.
   scoped_refptr<UpdateTabFunction> update_tab_function(new UpdateTabFunction());
-  scoped_refptr<Extension> empty_extension(utils::CreateEmptyExtension());
+  scoped_refptr<extensions::Extension> empty_extension(
+      utils::CreateEmptyExtension());
   update_tab_function->set_extension(empty_extension.get());
   // Without a callback the function will not generate a result.
   update_tab_function->set_has_callback(true);
 
   scoped_ptr<base::Value> result(utils::RunFunctionAndReturnResult(
           update_tab_function.get(),
           "[null, {\"url\": \"neutrinos\"}]",
           browser()));
   EXPECT_EQ(base::Value::TYPE_NULL, result->GetType());
 }
@@ skipping 268 matching lines @@
 
   static const char kArgsMaximizedWithBounds[] =
       "[%u, {\"state\": \"maximized\", \"width\": 500}]";
   EXPECT_TRUE(MatchPattern(
       utils::RunFunctionAndReturnError(
           new UpdateWindowFunction(),
           base::StringPrintf(kArgsMaximizedWithBounds, window_id),
           browser()),
       keys::kInvalidWindowStateError));
 }