SkPath -> PreCachedPath

SkPath is not threadsafe.  Gotta use PreCachedPath.

TSAN is showing a race in SkPathRef::genID() to write the fGenerationID.

Change-Id: I42d6ecadaa754a3c6796ca465981de430a0abb84
Reviewed-on: https://skia-review.googlesource.com/17279
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Mike Klein <mtklein@chromium.org>
1 file changed