Delete the NPAPI plugin browsertests.

content/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 361 matching lines @@
 
     if (use_aura && !is_win) {
       deps += [ "//ui/events:test_support" ]
     }
 
     if (!use_aura && !is_mac) {
       sources -=
           [ "../browser/compositor/image_transport_factory_browsertest.cc" ]
     }
 
-    if (!is_android && !is_ios && !is_linux) {
-      # Npapi test plugin doesn't build on Android or iOS.
-      #data_deps += [ 'copy_npapi_test_plugin' ]  TODO(GYP)
-    }
-
     if (enable_webrtc) {
       sources += rebase_path(
               content_tests_gypi_values.content_browsertests_webrtc_sources,
               ".",
               "//content")
       deps += [ "//testing/perf" ]
     }
 
     if (enable_plugins) {
       sources += rebase_path(
@@ skipping 298 matching lines @@
       "//gpu/blink",
       "//testing/gtest",
       "//third_party/WebKit/public:blink",
       "//ui/base",
       "//ui/gfx",
       "//ui/gfx/geometry",
       "//ui/gl",
     ]
   }
 }