Added gpu AA clipping to old shader path

http://codereview.appspot.com/6139065/



git-svn-id: http://skia.googlecode.com/svn/trunk@3812 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/GrClipMaskManager.h b/src/gpu/GrClipMaskManager.h
index e698791..be6873e 100644
--- a/src/gpu/GrClipMaskManager.h
+++ b/src/gpu/GrClipMaskManager.h
@@ -76,7 +76,10 @@
                                const GrClip& clip, 
                                const GrRect& bounds,
                                ScissoringSettings* scissorSettings);
-    bool createAlphaClipMask(GrGpu* gpu, const GrClip& clipIn);
+    bool createAlphaClipMask(GrGpu* gpu,
+                             const GrClip& clipIn,
+                             GrTexture** result,
+                             GrRect *resultBounds);
 
     bool drawPath(GrGpu* gpu,
                   const SkPath& path,