Add link to general Google privacy policy.

No-Try: true
Docs-Preview: https://skia.org/?cl=182448
Bug: skia:
Change-Id: I334cb6e66a62b1bb2631f7e806d48f75612020ea
Reviewed-on: https://skia-review.googlesource.com/c/182448
Auto-Submit: Joe Gregorio <jcgregorio@google.com>
Reviewed-by: Joe Gregorio <jcgregorio@google.com>
Commit-Queue: Joe Gregorio <jcgregorio@google.com>
1 file changed