use std qsort instead of our (now gone) version



git-svn-id: http://skia.googlecode.com/svn/trunk@3847 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/utils/win/SkWGL_win.cpp b/src/utils/win/SkWGL_win.cpp
index baff735..e06c6e4 100644
--- a/src/utils/win/SkWGL_win.cpp
+++ b/src/utils/win/SkWGL_win.cpp
@@ -133,10 +133,10 @@
         rankedFormats[i].fColorSamples = answers[supportsCoverage ? 1 : 0];
         rankedFormats[i].fChoosePixelFormatRank = i;
     }
-    SkQSort(rankedFormats.begin(),
+    qsort(rankedFormats.begin(),
             rankedFormats.count(),
             sizeof(PixelFormat),
-            (SkQSortCompareProc)compare_pf);
+            SkCastForQSort(compare_pf));
     int idx = SkTSearch<PixelFormat>(rankedFormats.begin(),
                                      rankedFormats.count(),
                                      desiredFormat,