Simplify fill path call by removing do_fill_path

The git diff is not very informative for this CL.
Here's a better diff:

1. do_fill_path is removed and its content is copied to AntiFillPath

2. Any call to do_fill_path is removed.

3. std::function FillPathFunc is removed (and replaced by direct
   AAAFillPath, DAAFillPath, and SAAFillPath call).

4. The old call chain is:
     AntiFillPath -> (AAAFillPath/DAAFillPath/...)
                  -> do_fill_path
                  -> specific FillPathFunc
   The new call chain is:
     AntiFillPath -> AAAFillPath/DAAFillPath/SAAFillPath

This is made possible by the removal of SK_SUPPORT_LEGACY_AA_CHOICE
which makes sure that AntiFillPath is the only function that makes
the choice of AAA/DAA/SAA.

In the next CL, I'll improve the structure of SkScan::AntiFillPath
to prepare for Threaded Backend's init-once change.

Bug: skia:
Change-Id: If6ebbdab207cadb7bfe2cb3fcf33ea3d180c3896
Reviewed-on: https://skia-review.googlesource.com/67340
Reviewed-by: Mike Reed <reed@google.com>
Reviewed-by: Cary Clark <caryclark@google.com>
Commit-Queue: Yuqian Li <liyuqian@google.com>

0 files changed, 0 insertions, 0 deletions