pepper: parse context creation attrib list on the plugin side

ui/gfx/gfx.gyp

Index: ui/gfx/gfx.gyp
diff --git a/ui/gfx/gfx.gyp b/ui/gfx/gfx.gyp
index b36eb931a714428c1c0a5dce1868258c32e813cd..385038eaf82a6fec9e175a948fa772e5891ff83e 100644
--- a/ui/gfx/gfx.gyp
+++ b/ui/gfx/gfx.gyp
@@ -13,57 +13,8 @@
       'dependencies': [
         '<(DEPTH)/base/base.gyp:base',
       ],
-      'defines': [
-        'GFX_IMPLEMENTATION',
-      ],
-      'sources': [
-        'geometry/box_f.cc',
-        'geometry/box_f.h',
-        'geometry/cubic_bezier.cc',
-        'geometry/cubic_bezier.h',
-        'geometry/dip_util.cc',
-        'geometry/dip_util.h',
-        'geometry/insets.cc',
-        'geometry/insets.h',
-        'geometry/insets_f.cc',
-        'geometry/insets_f.h',
-        'geometry/matrix3_f.cc',
-        'geometry/matrix3_f.h',
-        'geometry/point.cc',
-        'geometry/point.h',
-        'geometry/point3_f.cc',
-        'geometry/point3_f.h',
-        'geometry/point_conversions.cc',
-        'geometry/point_conversions.h',
-        'geometry/point_f.cc',
-        'geometry/point_f.h',
-        'geometry/quad_f.cc',
-        'geometry/quad_f.h',
-        'geometry/rect.cc',
-        'geometry/rect.h',
-        'geometry/rect_conversions.cc',
-        'geometry/rect_conversions.h',
-        'geometry/rect_f.cc',
-        'geometry/rect_f.h',
-        'geometry/safe_integer_conversions.h',
-        'geometry/scroll_offset.cc',
-        'geometry/scroll_offset.h',
-        'geometry/size.cc',
-        'geometry/size.h',
-        'geometry/size_conversions.cc',
-        'geometry/size_conversions.h',
-        'geometry/size_f.cc',
-        'geometry/size_f.h',
-        'geometry/vector2d.cc',
-        'geometry/vector2d.h',
-        'geometry/vector2d_conversions.cc',
-        'geometry/vector2d_conversions.h',
-        'geometry/vector2d_f.cc',
-        'geometry/vector2d_f.h',
-        'geometry/vector3d_f.cc',
-        'geometry/vector3d_f.h',
-      ],
       'includes': [
+        'gfx_geometry.gypi',
         '../../build/android/increase_size_for_speed.gypi',
       ],
     },