Restore SkPath(const SkPath&) to copy the generation ID on Android.

BUG=
R=bsalomon@google.com, bungeman@google.com, reed@google.com

Review URL: https://codereview.chromium.org/22471002

git-svn-id: http://skia.googlecode.com/svn/trunk@10622 2bbb7eff-a529-9590-31e7-b0007b416f81
3 files changed