Delete the NPAPI plugin browsertests.

content/test/plugin/plugin_javascript_open_popup.h

-// Copyright (c) 2011 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 CONTENT_TEST_PLUGIN_PLUGIN_JAVASCRIPT_OPEN_POPUP_H_
-#define CONTENT_TEST_PLUGIN_PLUGIN_JAVASCRIPT_OPEN_POPUP_H_
-
-#include "base/compiler_specific.h"
-#include "content/test/plugin/plugin_test.h"
-
-namespace NPAPIClient {
-
-// This class tests the case where a windowed plugin instance is
-// instantiated in a popup window. The plugin instance needs to
-// have a valid parent window.
-class ExecuteJavascriptOpenPopupWithPluginTest : public PluginTest {
- public:
-  // Constructor.
-  ExecuteJavascriptOpenPopupWithPluginTest(
-      NPP id, NPNetscapeFuncs *host_functions);
-  // NPAPI SetWindow handler.
-  NPError SetWindow(NPWindow* window) override;
-
- private:
-  bool popup_window_test_started_;
-};
-
-// This class represents a windowed plugin instance instantiated within a
-// popup window. It verifies that the plugin instance has a valid parent.
-class ExecuteJavascriptPopupWindowTargetPluginTest : public PluginTest {
- public:
-  ExecuteJavascriptPopupWindowTargetPluginTest(
-      NPP id, NPNetscapeFuncs *host_functions);
-  // NPAPI SetWindow handler.
-  NPError SetWindow(NPWindow* window) override;
-
- private:
-  // Do a platform-specific validation of the passed-in |window|.
-  // E.g. on Windows, verifies window->window is a reasonable HWND.
-  // Returns true if the test should be marked complete.
-  bool CheckWindow(NPWindow* window);
-
-  bool test_completed_;
-};
-
-}  // namespace NPAPIClient
-
-#endif  // CONTENT_TEST_PLUGIN_PLUGIN_JAVASCRIPT_OPEN_POPUP_H_