Move small c/b/extensions classes into extensions namespace no.1

chrome/browser/extensions/convert_web_app_browsertest.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 <string>
 
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/common/chrome_notification_types.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/extensions/extension.h"
 #include "chrome/common/extensions/permissions/permission_set.h"
 #include "chrome/test/base/in_process_browser_test.h"
 #include "chrome/test/base/ui_test_utils.h"
 #include "content/public/browser/notification_details.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/notification_service.h"
 
-using extensions::APIPermission;
+namespace extensions {
 
 class ExtensionFromWebAppTest
     : public InProcessBrowserTest, public content::NotificationObserver {
  protected:
   ExtensionFromWebAppTest() : installed_extension_(NULL) {
   }
 
   std::string expected_extension_id_;
-  const extensions::Extension* installed_extension_;
+  const Extension* installed_extension_;
 
  private:
   // InProcessBrowserTest
   virtual void SetUpCommandLine(CommandLine* command_line) {
     command_line->AppendSwitch(switches::kEnableCrxlessWebApps);
   }
 
   // content::NotificationObserver
   virtual void Observe(int type,
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) {
     if (type == chrome::NOTIFICATION_EXTENSION_INSTALLED) {
-      const extensions::Extension* extension =
-          content::Details<const extensions::Extension>(details).ptr();
+      const Extension* extension =
+          content::Details<const Extension>(details).ptr();
       if (extension->id() == expected_extension_id_) {
         installed_extension_ = extension;
         MessageLoopForUI::current()->Quit();
       }
     }
   }
 };
 
 IN_PROC_BROWSER_TEST_F(ExtensionFromWebAppTest, Basic) {
   ASSERT_TRUE(test_server()->Start());
@@ skipping 27 matching lines @@
       APIPermission::kNotification));
 
   ASSERT_EQ(3u, installed_extension_->icons().map().size());
   EXPECT_EQ("icons/16.png", installed_extension_->icons().Get(
       16, ExtensionIconSet::MATCH_EXACTLY));
   EXPECT_EQ("icons/48.png", installed_extension_->icons().Get(
       48, ExtensionIconSet::MATCH_EXACTLY));
   EXPECT_EQ("icons/128.png", installed_extension_->icons().Get(
       128, ExtensionIconSet::MATCH_EXACTLY));
 }
+
+}  // namespace extensions