Delete the NPAPI plugin browsertests.

content/content_browsertests.isolate

 # Copyright (c) 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.
 {
   'conditions': [
     ['use_x11==0', {
       'variables': {
         'command': [
           '../testing/test_env.py',
           '<(PRODUCT_DIR)/content_browsertests<(EXECUTABLE_SUFFIX)',
@@ skipping 77 matching lines @@
           '../third_party/pywebsocket/',
           '../third_party/tlslite/',
           '<(PRODUCT_DIR)/content_browsertests<(EXECUTABLE_SUFFIX)',
         ],
       },
     }],
     ['OS=="mac"', {
       'variables': {
         'files': [
           '<(PRODUCT_DIR)/Content Shell.app/',
-          '<(PRODUCT_DIR)/plugins/npapi_test_plugin.plugin/',
           '<(PRODUCT_DIR)/plugins/test_netscape_plugin.plugin/',
           '<(PRODUCT_DIR)/ppapi_tests.plugin/Contents/MacOS/ppapi_tests',
         ],
       },
     }],
     ['OS=="mac" and asan==1 and fastbuild==0', {
       'variables': {
         'files': [
           '<(PRODUCT_DIR)/Content Shell Framework.framework.dSYM/',
           '<(PRODUCT_DIR)/Content Shell Helper.app.dSYM/',
           '<(PRODUCT_DIR)/Content Shell.app.dSYM/',
           '<(PRODUCT_DIR)/content_browsertests.dSYM/',
-          '<(PRODUCT_DIR)/npapi_test_plugin.plugin.dSYM/',
           '<(PRODUCT_DIR)/ppapi_tests.plugin.dSYM/',
           '<(PRODUCT_DIR)/test_netscape_plugin.plugin.dSYM/',
         ],
       },
     }],
     ['OS=="win"', {
       'variables': {
         'files': [
           '<(PRODUCT_DIR)/content_shell.pak',
           '<(PRODUCT_DIR)/osmesa.dll',
           '<(PRODUCT_DIR)/plugins/np_test_netscape_plugin.dll',
-          '<(PRODUCT_DIR)/plugins/npapi_test_plugin.dll',
           '<(PRODUCT_DIR)/ppapi_tests.dll',
         ],
       },
     }],
     ['OS=="win" and target_arch=="ia32"', {
       'variables': {
         'files': [
           '<(PRODUCT_DIR)/wow_helper.exe',
         ],
       },
     }],
     ['OS=="win" and (fastbuild==0 or fastbuild==1)', {
       'variables': {
         'files': [
           '<(PRODUCT_DIR)/content_browsertests.exe.pdb',
         ],
       },
     }],
   ],
   'includes': [
     '../base/base.isolate',
     '../gin/v8.isolate',
     '../third_party/angle/angle.isolate',
   ],
 }