Move geometry allocator for drawVertices inside autoflush scope.

BUG=skia:1956
R=bsalomon@google.com, reed@google.com

Author: jvanverth@google.com

Review URL: https://codereview.chromium.org/128893003

git-svn-id: http://skia.googlecode.com/svn/trunk@12973 2bbb7eff-a529-9590-31e7-b0007b416f81
1 file changed