Switching ppapi on nacl side to import chrome side .gyp[i] directly.

src/shared/ppapi/ppapi.gyp

 # Copyright (c) 2010 The Native Client Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 {
   'includes': [
     '../../../build/common.gypi',
-  ],
-  'variables': {
-    'cpp_sources' : [
-      # Updated automatically by update-scons.py.
-      # From ppapi_cpp.gypi:ppapi_cpp_objects:.*\.cc
-      '<(DEPTH)/ppapi/cpp/audio.cc',
-      '<(DEPTH)/ppapi/cpp/audio_config.cc',
-      '<(DEPTH)/ppapi/cpp/core.cc',
-      '<(DEPTH)/ppapi/cpp/graphics_2d.cc',
-      '<(DEPTH)/ppapi/cpp/image_data.cc',
-      '<(DEPTH)/ppapi/cpp/instance.cc',
-      '<(DEPTH)/ppapi/cpp/module.cc',
-      '<(DEPTH)/ppapi/cpp/paint_aggregator.cc',
-      '<(DEPTH)/ppapi/cpp/paint_manager.cc',
-      '<(DEPTH)/ppapi/cpp/rect.cc',
-      '<(DEPTH)/ppapi/cpp/resource.cc',
-      '<(DEPTH)/ppapi/cpp/url_loader.cc',
-      '<(DEPTH)/ppapi/cpp/url_request_info.cc',
-      '<(DEPTH)/ppapi/cpp/url_response_info.cc',
-      '<(DEPTH)/ppapi/cpp/var.cc',
-      '<(DEPTH)/ppapi/cpp/dev/buffer_dev.cc',
-      '<(DEPTH)/ppapi/cpp/dev/context_3d_dev.cc',
-      '<(DEPTH)/ppapi/cpp/dev/directory_entry_dev.cc',
-      '<(DEPTH)/ppapi/cpp/dev/directory_reader_dev.cc',
-      '<(DEPTH)/ppapi/cpp/dev/file_chooser_dev.cc',
-      '<(DEPTH)/ppapi/cpp/dev/file_io_dev.cc',
-      '<(DEPTH)/ppapi/cpp/dev/file_ref_dev.cc',
-      '<(DEPTH)/ppapi/cpp/dev/file_system_dev.cc',
-      '<(DEPTH)/ppapi/cpp/dev/find_dev.cc',
-      '<(DEPTH)/ppapi/cpp/dev/font_dev.cc',
-      '<(DEPTH)/ppapi/cpp/dev/fullscreen_dev.cc',
-      '<(DEPTH)/ppapi/cpp/dev/graphics_3d_client_dev.cc',
-      '<(DEPTH)/ppapi/cpp/dev/graphics_3d_dev.cc',
-      '<(DEPTH)/ppapi/cpp/dev/printing_dev.cc',
-      '<(DEPTH)/ppapi/cpp/dev/scrollbar_dev.cc',
-      '<(DEPTH)/ppapi/cpp/dev/selection_dev.cc',
-      '<(DEPTH)/ppapi/cpp/dev/surface_3d_dev.cc',
-      '<(DEPTH)/ppapi/cpp/dev/transport_dev.cc',
-      '<(DEPTH)/ppapi/cpp/dev/url_util_dev.cc',
-      '<(DEPTH)/ppapi/cpp/dev/video_decoder_dev.cc',
-      '<(DEPTH)/ppapi/cpp/dev/widget_client_dev.cc',
-      '<(DEPTH)/ppapi/cpp/dev/widget_dev.cc',
-      '<(DEPTH)/ppapi/cpp/dev/zoom_dev.cc',
-      '<(DEPTH)/ppapi/cpp/dev/scriptable_object_deprecated.cc',
-      # End ppapi_cpp.gypi
-      # Updated automatically by update-scons.py.
-      # From ppapi_cpp.gypi:ppapi_cpp:.*\.cc
-      '<(DEPTH)/ppapi/cpp/ppp_entrypoints.cc',
-      # End ppapi_cpp.gypi
-    ]
-  },
-  'targets': [
-    {
-      'target_name': 'ppapi_cpp',
-      'type': 'static_library',
-      'sources': [
-        '<@(cpp_sources)',
-      ],
-      'include_dirs': [
-        '<(DEPTH)',
-      ],
-    },
+    '../../../../ppapi/ppapi_cpp.gypi',
   ],
 }