Move weborigin/ under platform/ so that it may someday call platform APIs

Source/core/core.gyp

 #
 # Copyright (C) 2009 Google Inc. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 # notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
@@ skipping 339 matching lines @@
         'injected_canvas_script_source',
         'injected_script_source',
         'inspector_overlay_page',
         'inspector_protocol_sources',
         'inspector_instrumentation_sources',
         '../bindings/derived_sources.gyp:bindings_derived_sources',
         'core_derived_sources.gyp:make_core_derived_sources',
         '../wtf/wtf.gyp:wtf',
         '../config.gyp:config',
         '../platform/blink_platform.gyp:blink_platform',
-        '../weborigin/weborigin.gyp:weborigin',
         '<(DEPTH)/gpu/gpu.gyp:gles2_c_lib',
         '<(DEPTH)/skia/skia.gyp:skia',
         '<(DEPTH)/third_party/angle_dx11/src/build_angle.gyp:translator',
         '<(DEPTH)/third_party/iccjpeg/iccjpeg.gyp:iccjpeg',
         '<(DEPTH)/third_party/libpng/libpng.gyp:libpng',
         '<(DEPTH)/third_party/libwebp/libwebp.gyp:libwebp',
         '<(DEPTH)/third_party/libxml/libxml.gyp:libxml',
         '<(DEPTH)/third_party/libxslt/libxslt.gyp:libxslt',
         '<(DEPTH)/third_party/npapi/npapi.gyp:npapi',
         '<(DEPTH)/third_party/ots/ots.gyp:ots',
@@ skipping 716 matching lines @@
         '<(SHARED_INTERMEDIATE_DIR)/blink/bindings/V8LayerRect.h',
         '<(SHARED_INTERMEDIATE_DIR)/blink/bindings/V8LayerRectList.cpp',
         '<(SHARED_INTERMEDIATE_DIR)/blink/bindings/V8LayerRectList.h',
       ],
       'sources/': [
         ['exclude', 'testing/js'],
       ],
     },
   ],  # targets
 }