Split ExtensionTestObserver and move to //extensions.

chrome/browser/extensions/api/extension_action/browser_action_interactive_test.cc

 // Copyright 2013 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 "build/build_config.h"
 #include "chrome/browser/extensions/browser_action_test_util.h"
 #include "chrome/browser/extensions/extension_action.h"
 #include "chrome/browser/extensions/extension_action_manager.h"
 #include "chrome/browser/extensions/extension_apitest.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/sessions/session_tab_helper.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_commands.h"
 #include "chrome/browser/ui/browser_finder.h"
 #include "chrome/browser/ui/browser_list.h"
 #include "chrome/browser/ui/browser_window.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/browser/ui/toolbar/toolbar_actions_model.h"
 #include "chrome/test/base/interactive_test_utils.h"
 #include "chrome/test/base/ui_test_utils.h"
 #include "content/public/browser/notification_service.h"
+#include "content/public/browser/notification_types.h"
 #include "extensions/browser/extension_registry.h"
 #include "extensions/browser/extension_system.h"
+#include "extensions/browser/notification_types.h"
 #include "extensions/common/extension.h"
 #include "extensions/common/extension_set.h"
 #include "extensions/common/permissions/permissions_data.h"
 #include "extensions/test/extension_test_message_listener.h"
 #include "extensions/test/result_catcher.h"
 
 #if defined(OS_WIN)
 #include "ui/views/win/hwnd_util.h"
 #endif
 
@@ skipping 349 matching lines @@
 
   // Forcibly closing the browser HWND should not cause a crash.
   EXPECT_EQ(TRUE, ::CloseWindow(hwnd));
   EXPECT_EQ(TRUE, ::DestroyWindow(hwnd));
   EXPECT_EQ(FALSE, ::IsWindow(hwnd));
 }
 #endif  // OS_WIN
 
 }  // namespace
 }  // namespace extensions