pepper: parse context creation attrib list on the plugin side

ui/gfx/ipc/geometry/gfx_ipc_geometry.gypi

Index: ui/gfx/ipc/geometry/gfx_ipc_geometry.gypi
diff --git a/ui/gfx/ipc/geometry/gfx_ipc_geometry.gypi b/ui/gfx/ipc/geometry/gfx_ipc_geometry.gypi
new file mode 100644
index 0000000000000000000000000000000000000000..616bb9296ef208f90735cc31901c132d3adb9d0f
--- /dev/null
+++ b/ui/gfx/ipc/geometry/gfx_ipc_geometry.gypi
@@ -0,0 +1,17 @@
+# Copyright 2016 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.
+
+{
+  'defines': [
+    'GFX_IPC_GEOMETRY_IMPLEMENTATION',
+  ],
+  'include_dirs': [
+    '../../..',
+  ],
+  'sources': [
+    'gfx_param_traits.cc',
+    'gfx_param_traits.h',
+    'gfx_ipc_geometry_export.h',
+  ],
+}