Relanding this as the previous attempt failed due to build errors.

webkit/plugins/webkit_plugins.gypi

+# 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.
+
+{
+  'targets': [
+    {
+      'target_name': 'plugins_common',
+      'type': 'static_library',
+      'defines': [
+        'WEBKIT_PLUGINS_IMPLEMENTATION',
+      ],
+      'include_dirs': [
+        '<(INTERMEDIATE_DIR)',
+        '<(SHARED_INTERMEDIATE_DIR)/ui',
+      ],
+      'dependencies': [
+        '<(DEPTH)/base/base.gyp:base_i18n',
+        '<(DEPTH)/base/base.gyp:base_static',
+      ],
+      'sources': [
+        '../plugins/webplugininfo.cc',
+        '../plugins/webplugininfo.h',
+        '../plugins/plugin_constants.cc',
+        '../plugins/plugin_constants.h',
+        '../plugins/npapi/plugin_constants_win.cc',
+        '../plugins/npapi/plugin_constants_win.h',
+        '../plugins/plugin_switches.cc',
+        '../plugins/plugin_switches.h',
+        '../plugins/npapi/plugin_utils.cc',
+        '../plugins/npapi/plugin_utils.h',
+      ],
+      # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
+      'msvs_disabled_warnings': [ 4267 ],
+    },
+
+    {
+      'target_name': 'plugins',
+      'type': '<(component)',
+      'defines': [
+        'WEBKIT_PLUGINS_IMPLEMENTATION',
+      ],
+      'include_dirs': [
+        '<(INTERMEDIATE_DIR)',
+        '<(SHARED_INTERMEDIATE_DIR)/webkit',
+        '<(SHARED_INTERMEDIATE_DIR)/ui',
+      ],
+      'dependencies': [
+        '<(DEPTH)/base/base.gyp:base',
+        '<(DEPTH)/base/base.gyp:base_i18n',
+        '<(DEPTH)/base/third_party/dynamic_annotations/dynamic_annotations.gyp:dynamic_annotations',
+        '<(DEPTH)/build/temp_gyp/googleurl.gyp:googleurl',
+        '<(DEPTH)/gpu/gpu.gyp:gles2_c_lib',
+        '<(DEPTH)/gpu/gpu.gyp:gles2_implementation',
+        '<(DEPTH)/media/media.gyp:media',
+        '<(DEPTH)/media/media.gyp:shared_memory_support',
+        '<(DEPTH)/net/net.gyp:net',
+        '<(DEPTH)/ppapi/ppapi.gyp:ppapi_c',
+        '<(DEPTH)/ppapi/ppapi_internal.gyp:ppapi_shared',
+        '<(DEPTH)/printing/printing.gyp:printing',
+        '<(DEPTH)/skia/skia.gyp:skia',
+        '<(DEPTH)/ui/gl/gl.gyp:gl',
+        '<(DEPTH)/ui/ui.gyp:ui',
+        '<(DEPTH)/ui/ui.gyp:ui_resources',
+        '<(DEPTH)/v8/tools/gyp/v8.gyp:v8',
+        '<(DEPTH)/webkit/compositor_bindings/compositor_bindings.gyp:webkit_compositor_support',
+        '<(DEPTH)/third_party/WebKit/Source/WebKit/chromium/WebKit.gyp:webkit',
+        'glue_common',
+        'plugins_common',
+        'user_agent',
+        'webkit_base',
+        'webkit_storage',
+      ],
+      'sources': [
+        # This list contains all .h, .cc, and .mm files in glue except for
+        # those in the test subdirectory and those with unittest in in their
+        # names.
+        '../plugins/npapi/gtk_plugin_container.cc',
+        '../plugins/npapi/gtk_plugin_container.h',
+        '../plugins/npapi/gtk_plugin_container_manager.cc',
+        '../plugins/npapi/gtk_plugin_container_manager.h',
+        '../plugins/npapi/plugin_host.cc',
+        '../plugins/npapi/plugin_host.h',
+        '../plugins/npapi/plugin_instance.cc',
+        '../plugins/npapi/plugin_instance.h',
+        '../plugins/npapi/plugin_instance_mac.mm',
+        '../plugins/npapi/plugin_lib.cc',
+        '../plugins/npapi/plugin_lib.h',
+        '../plugins/npapi/plugin_lib_mac.mm',
+        '../plugins/npapi/plugin_lib_posix.cc',
+        '../plugins/npapi/plugin_lib_win.cc',
+        '../plugins/npapi/plugin_list.cc',
+        '../plugins/npapi/plugin_list.h',
+        '../plugins/npapi/plugin_list_mac.mm',
+        '../plugins/npapi/plugin_list_posix.cc',
+        '../plugins/npapi/plugin_list_win.cc',
+        '../plugins/npapi/plugin_stream.cc',
+        '../plugins/npapi/plugin_stream.h',
+        '../plugins/npapi/plugin_stream_posix.cc',
+        '../plugins/npapi/plugin_stream_url.cc',
+        '../plugins/npapi/plugin_stream_url.h',
+        '../plugins/npapi/plugin_stream_win.cc',
+        '../plugins/npapi/plugin_string_stream.cc',
+        '../plugins/npapi/plugin_string_stream.h',
+        '../plugins/npapi/plugin_web_event_converter_mac.h',
+        '../plugins/npapi/plugin_web_event_converter_mac.mm',
+        '../plugins/npapi/webplugin.cc',
+        '../plugins/npapi/webplugin.h',
+        '../plugins/npapi/webplugin_accelerated_surface_mac.h',
+        '../plugins/npapi/webplugin_delegate.h',
+        '../plugins/npapi/webplugin_delegate_impl.cc',
+        '../plugins/npapi/webplugin_delegate_impl.h',
+        '../plugins/npapi/webplugin_delegate_impl_android.cc',
+        '../plugins/npapi/webplugin_delegate_impl_aura.cc',
+        '../plugins/npapi/webplugin_delegate_impl_gtk.cc',
+        '../plugins/npapi/webplugin_delegate_impl_mac.mm',
+        '../plugins/npapi/webplugin_delegate_impl_win.cc',
+        '../plugins/npapi/webplugin_ime_win.cc',
+        '../plugins/npapi/webplugin_ime_win.h',
+        '../plugins/npapi/webplugin_impl.cc',
+        '../plugins/npapi/webplugin_impl.h',
+        '../plugins/ppapi/audio_helper.cc',
+        '../plugins/ppapi/audio_helper.h',
+        '../plugins/ppapi/common.h',
+        '../plugins/ppapi/content_decryptor_delegate.cc',
+        '../plugins/ppapi/content_decryptor_delegate.h',
+        '../plugins/ppapi/event_conversion.cc',
+        '../plugins/ppapi/event_conversion.h',
+        '../plugins/ppapi/file_callbacks.cc',
+        '../plugins/ppapi/file_callbacks.h',
+        '../plugins/ppapi/fullscreen_container.h',
+        '../plugins/ppapi/gfx_conversion.h',
+        '../plugins/ppapi/host_array_buffer_var.cc',
+        '../plugins/ppapi/host_array_buffer_var.h',
+        '../plugins/ppapi/host_globals.cc',
+        '../plugins/ppapi/host_globals.h',
+        '../plugins/ppapi/host_var_tracker.cc',
+        '../plugins/ppapi/host_var_tracker.h',
+        '../plugins/ppapi/message_channel.cc',
+        '../plugins/ppapi/message_channel.h',
+        '../plugins/ppapi/npapi_glue.cc',
+        '../plugins/ppapi/npapi_glue.h',
+        '../plugins/ppapi/npobject_var.cc',
+        '../plugins/ppapi/npobject_var.h',
+        '../plugins/ppapi/plugin_delegate.h',
+        '../plugins/ppapi/plugin_module.cc',
+        '../plugins/ppapi/plugin_module.h',
+        '../plugins/ppapi/plugin_object.cc',
+        '../plugins/ppapi/plugin_object.h',
+        '../plugins/ppapi/ppapi_interface_factory.cc',
+        '../plugins/ppapi/ppapi_interface_factory.h',
+        '../plugins/ppapi/ppapi_plugin_instance.cc',
+        '../plugins/ppapi/ppapi_plugin_instance.h',
+        '../plugins/ppapi/ppapi_webplugin_impl.cc',
+        '../plugins/ppapi/ppapi_webplugin_impl.h',
+        '../plugins/ppapi/ppb_audio_impl.cc',
+        '../plugins/ppapi/ppb_audio_impl.h',
+        '../plugins/ppapi/ppb_broker_impl.cc',
+        '../plugins/ppapi/ppb_broker_impl.h',
+        '../plugins/ppapi/ppb_buffer_impl.cc',
+        '../plugins/ppapi/ppb_buffer_impl.h',
+        '../plugins/ppapi/ppb_file_ref_impl.cc',
+        '../plugins/ppapi/ppb_file_ref_impl.h',
+        '../plugins/ppapi/ppb_flash_message_loop_impl.cc',
+        '../plugins/ppapi/ppb_flash_message_loop_impl.h',
+        '../plugins/ppapi/ppb_gpu_blacklist_private_impl.cc',
+        '../plugins/ppapi/ppb_gpu_blacklist_private_impl.h',
+        '../plugins/ppapi/ppb_graphics_3d_impl.cc',
+        '../plugins/ppapi/ppb_graphics_3d_impl.h',
+        '../plugins/ppapi/ppb_image_data_impl.cc',
+        '../plugins/ppapi/ppb_image_data_impl.h',
+        '../plugins/ppapi/ppb_network_monitor_private_impl.cc',
+        '../plugins/ppapi/ppb_network_monitor_private_impl.h',
+        '../plugins/ppapi/ppb_proxy_impl.cc',
+        '../plugins/ppapi/ppb_proxy_impl.h',
+        '../plugins/ppapi/ppb_scrollbar_impl.cc',
+        '../plugins/ppapi/ppb_scrollbar_impl.h',
+        '../plugins/ppapi/ppb_tcp_server_socket_private_impl.cc',
+        '../plugins/ppapi/ppb_tcp_server_socket_private_impl.h',
+        '../plugins/ppapi/ppb_tcp_socket_private_impl.cc',
+        '../plugins/ppapi/ppb_tcp_socket_private_impl.h',
+        '../plugins/ppapi/ppb_uma_private_impl.cc',
+        '../plugins/ppapi/ppb_uma_private_impl.h',
+        '../plugins/ppapi/ppb_url_loader_impl.cc',
+        '../plugins/ppapi/ppb_url_loader_impl.h',
+        '../plugins/ppapi/ppb_var_deprecated_impl.cc',
+        '../plugins/ppapi/ppb_var_deprecated_impl.h',
+        '../plugins/ppapi/ppb_video_decoder_impl.cc',
+        '../plugins/ppapi/ppb_video_decoder_impl.h',
+        '../plugins/ppapi/ppb_widget_impl.cc',
+        '../plugins/ppapi/ppb_widget_impl.h',
+        '../plugins/ppapi/ppb_x509_certificate_private_impl.cc',
+        '../plugins/ppapi/ppb_x509_certificate_private_impl.h',
+        '../plugins/ppapi/quota_file_io.cc',
+        '../plugins/ppapi/quota_file_io.h',
+        '../plugins/ppapi/resource_creation_impl.cc',
+        '../plugins/ppapi/resource_creation_impl.h',
+        '../plugins/ppapi/resource_helper.cc',
+        '../plugins/ppapi/resource_helper.h',
+        '../plugins/ppapi/string.cc',
+        '../plugins/ppapi/string.h',
+        '../plugins/ppapi/url_response_info_util.cc',
+        '../plugins/ppapi/url_response_info_util.h',
+        '../plugins/ppapi/url_request_info_util.cc',
+        '../plugins/ppapi/url_request_info_util.h',
+        '../plugins/ppapi/usb_key_code_conversion.h',
+        '../plugins/ppapi/usb_key_code_conversion.cc',
+        '../plugins/ppapi/usb_key_code_conversion_linux.cc',
+        '../plugins/ppapi/usb_key_code_conversion_mac.cc',
+        '../plugins/ppapi/usb_key_code_conversion_win.cc',
+        '../plugins/sad_plugin.cc',
+        '../plugins/sad_plugin.h',
+        '../plugins/webkit_plugins_export.h',
+      ],
+      'conditions': [
+        ['toolkit_uses_gtk == 1', {
+          'dependencies': [
+            '<(DEPTH)/build/linux/system.gyp:gtk',
+          ],
+          'sources/': [['exclude', '_x11\\.cc$']],
+          'sources!': [
+            'plugins/plugin_stubs.cc',
+          ],
+          'conditions': [
+            ['linux_use_tcmalloc == 1', {
+              'dependencies': [
+                # This is needed by ../extensions/v8/heap_profiler_extension.cc
+                '<(DEPTH)/base/allocator/allocator.gyp:allocator',
+              ],
+            }],
+          ],
+        }],
+        ['use_aura==1', {
+          'sources/': [
+            ['exclude', '^\\.\\./plugins/npapi/webplugin_delegate_impl_mac.mm'],
+          ],
+        }],
+        ['use_aura==1 and OS=="win"', {
+          'sources/': [
+            ['exclude', '^\\.\\./plugins/npapi/webplugin_delegate_impl_aura'],
+          ],
+        }],
+        ['OS!="mac"', {
+          'sources/': [['exclude', '_mac\\.(cc|mm)$']],
+        }, {  # else: OS=="mac"
+          'sources/': [['exclude', 'plugin_(lib|list)_posix\\.cc$']],
+          'link_settings': {
+            'libraries': [
+              '$(SDKROOT)/System/Library/Frameworks/QuartzCore.framework',
+            ],
+          },
+        }],
+        ['enable_gpu!=1', {
+          'sources!': [
+            '../plugins/ppapi/ppb_graphics_3d_impl.cc',
+            '../plugins/ppapi/ppb_graphics_3d_impl.h',
+            '../plugins/ppapi/ppb_open_gl_es_impl.cc',
+          ],
+        }],
+        ['OS!="win"', {
+          'sources/': [['exclude', '_win\\.cc$']],
+        }, {  # else: OS=="win"
+          # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
+          'msvs_disabled_warnings': [ 4800, 4267 ],
+          'sources/': [['exclude', '_posix\\.cc$']],
+          'include_dirs': [
+            '<(DEPTH)/third_party/wtl/include',
+          ],
+          'sources!': [
+            'plugins/plugin_stubs.cc',
+          ],
+        }],
+      ],
+    }
+  ],
+}