Delete the NPAPI plugin browsertests.

content/test/plugin/plugin_setup_test.h

Index: content/test/plugin/plugin_setup_test.h
diff --git a/content/test/plugin/plugin_setup_test.h b/content/test/plugin/plugin_setup_test.h
deleted file mode 100644
index 1708ce1e3eb62889705a6fa325661da9dc218fb7..0000000000000000000000000000000000000000
--- a/content/test/plugin/plugin_setup_test.h
+++ /dev/null
@@ -1,24 +0,0 @@
-// 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_SETUP_TEST_H_
-#define CONTENT_TEST_PLUGIN_PLUGIN_SETUP_TEST_H_
-
-#include "content/test/plugin/plugin_test.h"
-
-namespace NPAPIClient {
-
-// A very simple test that just sets up a new plugin.
-class PluginSetupTest : public PluginTest {
- public:
-  // Constructor.
-  PluginSetupTest(NPP id, NPNetscapeFuncs *host_functions);
-
-  // NPAPI SetWindow handler.
-  NPError SetWindow(NPWindow* pNPWindow) override;
-};
-
-}  // namespace NPAPIClient
-
-#endif  // CONTENT_TEST_PLUGIN_PLUGIN_SETUP_TEST_H_