Remove NPAPI test plugin

chrome/chrome_tests.gypi

 # 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.
 {
   'variables': {
     'build_angle_deqp_tests%': 0,
     'chrome_browser_extensions_test_support_sources': [
       # A list of sources which is shared between different browser tests.
       'browser/apps/app_browsertest_util.cc',
       'browser/apps/app_browsertest_util.h',
@@ skipping 3283 matching lines @@
             'gpu_tests_base',
           ],
           'sources': [
             'angle_unittests.isolate',
           ],
         },
         {
           'target_name': 'browser_tests_run',
           'type': 'none',
           'dependencies': [
-            '../content/content_shell_and_tests.gyp:copy_test_netscape_plugin',
             'browser_tests',
             'chrome',
           ],
           'includes': [
             '../build/isolate.gypi',
           ],
           'sources': [
             'browser_tests.isolate',
           ],
           'conditions': [
@@ skipping 232 matching lines @@
             'browser',
           ],
           'sources': [
             'tools/service_discovery_sniffer/service_discovery_sniffer.cc',
             'tools/service_discovery_sniffer/service_discovery_sniffer.h',
           ],
         }]
     }],
   ],  # 'conditions'
 }