Remove support for NPObjects.

content/content_child.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.
 
 {
   'dependencies': [
     '../base/base.gyp:base',
     '../components/mime_util/mime_util.gyp:mime_util',
     '../components/scheduler/scheduler.gyp:scheduler',
     '../components/tracing.gyp:tracing',
@@ skipping 135 matching lines @@
       'child/notifications/notification_image_loader.cc',
       'child/notifications/notification_image_loader.h',
       'child/notifications/notification_manager.cc',
       'child/notifications/notification_manager.h',
       'child/notifications/pending_notification.cc',
       'child/notifications/pending_notification.h',
       'child/notifications/pending_notifications_tracker.cc',
       'child/notifications/pending_notifications_tracker.h',
       'child/npapi/np_channel_base.cc',
       'child/npapi/np_channel_base.h',
-      'child/npapi/npobject_base.h',
-      'child/npapi/npobject_proxy.cc',
-      'child/npapi/npobject_proxy.h',
-      'child/npapi/npobject_stub.cc',
-      'child/npapi/npobject_stub.h',
-      'child/npapi/npobject_util.cc',
-      'child/npapi/npobject_util.h',
-      'child/npapi/npruntime_util.cc',
-      'child/npapi/npruntime_util.h',
       'child/npapi/plugin_host.cc',
       'child/npapi/plugin_host.h',
       'child/npapi/plugin_instance.cc',
       'child/npapi/plugin_instance.h',
       'child/npapi/plugin_instance_mac.mm',
       'child/npapi/plugin_lib.cc',
       'child/npapi/plugin_lib.h',
       'child/npapi/plugin_web_event_converter_mac.h',
       'child/npapi/plugin_web_event_converter_mac.mm',
       'child/npapi/webplugin.h',
@@ skipping 10 matching lines @@
       'child/npapi/webplugin_resource_client.h',
       'child/permissions/permission_dispatcher.cc',
       'child/permissions/permission_dispatcher.h',
       'child/permissions/permission_dispatcher_thread_proxy.cc',
       'child/permissions/permission_dispatcher_thread_proxy.h',
       'child/permissions/permission_observers_registry.cc',
       'child/permissions/permission_observers_registry.h',
       'child/plugin_message_generator.cc',
       'child/plugin_message_generator.h',
       'child/plugin_messages.h',
-      'child/plugin_param_traits.cc',
-      'child/plugin_param_traits.h',
       'child/power_monitor_broadcast_source.cc',
       'child/power_monitor_broadcast_source.h',
       'child/process_control_impl.cc',
       'child/process_control_impl.h',
       'child/push_messaging/push_dispatcher.cc',
       'child/push_messaging/push_dispatcher.h',
       'child/push_messaging/push_provider.cc',
       'child/push_messaging/push_provider.h',
       'child/quota_dispatcher.cc',
       'child/quota_dispatcher.h',
@@ skipping 111 matching lines @@
         'child/npapi/webplugin_delegate_impl_mac.mm',
       ],
     }],
     ['OS=="win"', {
       'sources!': [
         'child/npapi/webplugin_delegate_impl_aura.cc',
       ],
     }],
   ],
 }