Use SkPathRef gen id for SkPath::getGenerationID

R=mtklein@google.com

Author: bsalomon@google.com

Review URL: https://codereview.chromium.org/49693002

git-svn-id: http://skia.googlecode.com/svn/trunk/include@12010 2bbb7eff-a529-9590-31e7-b0007b416f81
2 files changed