Add virtual destructor to class with virtual functions.
BUG=
TEST=
Review URL: https://codereview.appspot.com/6453052
git-svn-id: http://skia.googlecode.com/svn/trunk@4810 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/core/SkCanvas.cpp b/src/core/SkCanvas.cpp
index 17f8b83..57f11df 100644
--- a/src/core/SkCanvas.cpp
+++ b/src/core/SkCanvas.cpp
@@ -2066,3 +2066,7 @@
const SkRegion& SkCanvas::LayerIter::clip() const { return fImpl->getClip(); }
int SkCanvas::LayerIter::x() const { return fImpl->getX(); }
int SkCanvas::LayerIter::y() const { return fImpl->getY(); }
+
+///////////////////////////////////////////////////////////////////////////////
+
+SkCanvas::ClipVisitor::~ClipVisitor() { }