change virtual setMatrixClip() to take a SkClipStack parameter.



git-svn-id: http://skia.googlecode.com/svn/trunk@831 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/pdf/SkPDFDevice.cpp b/src/pdf/SkPDFDevice.cpp
index 8a74556..72b2e1b 100644
--- a/src/pdf/SkPDFDevice.cpp
+++ b/src/pdf/SkPDFDevice.cpp
@@ -152,7 +152,8 @@
 }
 
 void SkPDFDevice::setMatrixClip(const SkMatrix& matrix,
-                                const SkRegion& region) {
+                                const SkRegion& region,
+                                const SkClipStack&) {
     // See the comment in the header file above GraphicStackEntry.
     if (region != fGraphicStack[fGraphicStackIndex].fClip) {
         while (fGraphicStackIndex > 0)