Roll gyp deps from 1765 to 1796.

This also adds gyp_skia.py which defers to gyp_skia.
This matches Chromium usage and allows parallel gyp-ing
(now the default) to work on Windows.

R=epoger@google.com

Review URL: https://codereview.chromium.org/81073002

git-svn-id: http://skia.googlecode.com/svn/trunk@12350 2bbb7eff-a529-9590-31e7-b0007b416f81
2 files changed