Delete the NPAPI plugin browsertests.

chrome/test/BUILD.gn

 # Copyright 2014 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.
 
 import("//build/config/chrome_build.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//build/module_args/v8.gni")
 import("//testing/test.gni")
@@ skipping 951 matching lines @@
       sources += [
         "../browser/extensions/api/networking_private/networking_private_apitest.cc",
         "../browser/extensions/api/networking_private/networking_private_chromeos_apitest.cc",
       ]
     }
     if (!is_android && !is_ios) {
       sources +=
           [ "../browser/copresence/chrome_whispernet_client_browsertest.cc" ]
       deps += [ "//components/copresence" ]
     }
-    if (!is_android && !is_ios && !is_linux) {
-      # NPAPI test plugin only works on some platforms.
-      data_deps += [
-        #'../content/content_shell_and_tests.gyp:copy_npapi_test_plugin',  TODO(GYP)
-      ]
-    }
     if (enable_app_list) {
       sources += rebase_path(
               chrome_tests_gypi_values.chrome_browser_tests_app_list_sources,
               ".",
               "//chrome")
     }
     if (enable_supervised_users) {
       sources += rebase_path(
               chrome_tests_gypi_values.chrome_browser_tests_supervised_user_sources,
               ".",
@@ skipping 836 matching lines @@
     "//third_party/mojo/src/mojo/edk/system",
   ]
 
   if (!is_android && use_ash) {
     sources +=
         rebase_path(unit_gypi_values.chrome_test_support_unit_ash_sources,
                     ".",
                     "//chrome")
   }
 }