More aura build fixes

ui/gfx/path_aura.cc

+// Copyright (c) 2011 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 "ui/gfx/path.h"
+
+#include "third_party/skia/include/core/SkRegion.h"
+
+namespace gfx {
+
+SkRegion* Path::CreateNativeRegion() const {
+  return new SkRegion;
+}
+
+// static
+NativeRegion Path::IntersectRegions(NativeRegion r1, NativeRegion r2) {
+  SkRegion* new_region = new SkRegion;
+  new_region->op(*r1, *r2, SkRegion::kIntersect_Op);
+  return new_region;
+}
+
+// static
+NativeRegion Path::CombineRegions(NativeRegion r1, NativeRegion r2) {
+  SkRegion* new_region = new SkRegion;
+  new_region->op(*r1, *r2, SkRegion::kUnion_Op);
+  return new_region;
+}
+
+// static
+NativeRegion Path::SubtractRegion(NativeRegion r1, NativeRegion r2) {
+  SkRegion* new_region = new SkRegion;
+  new_region->op(*r1, *r2, SkRegion::kDifference_Op);
+  return new_region;
+}
+
+}  // namespace gfx