Attempt 2 at:...

app/gfx/path_win.cc

 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "app/gfx/path.h"
 
 #include "base/scoped_ptr.h"
 
 namespace gfx {
 
-HRGN Path::CreateHRGN() const {
+HRGN Path::CreateNativeRegion() const {
   int point_count = getPoints(NULL, 0);
   scoped_array<SkPoint> points(new SkPoint[point_count]);
   getPoints(points.get(), point_count);
   scoped_array<POINT> windows_points(new POINT[point_count]);
   for (int i = 0; i < point_count; ++i) {
     windows_points[i].x = SkScalarRound(points[i].fX);
     windows_points[i].y = SkScalarRound(points[i].fY);
   }
 
   return ::CreatePolygonRgn(windows_points.get(), point_count, ALTERNATE);
 }
 
+// static
+NativeRegion Path::IntersectRegions(NativeRegion r1, NativeRegion r2) {
+  HRGN dest = CreateRectRgn(0, 0, 1, 1);
+  CombineRgn(dest, r1, r2, RGN_AND);
+  return dest;
+}
+
+// static
+NativeRegion Path::CombineRegions(NativeRegion r1, NativeRegion r2) {
+  HRGN dest = CreateRectRgn(0, 0, 1, 1);
+  CombineRgn(dest, r1, r2, RGN_OR);
+  return dest;
+}
+
+// static
+NativeRegion Path::SubtractRegion(NativeRegion r1, NativeRegion r2) {
+  HRGN dest = CreateRectRgn(0, 0, 1, 1);
+  CombineRgn(dest, r1, r2, RGN_DIFF);
+  return dest;
+}
+
 }  // namespace gfx