Fix direct-to-stencil clippath rendering logic in GrGpu.

Review URL: http://codereview.appspot.com/4273104/

git-svn-id: http://skia.googlecode.com/svn/trunk@1001 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/gpu/src/GrStencil.cpp b/gpu/src/GrStencil.cpp
index a1c8c09..c366f61 100644
--- a/gpu/src/GrStencil.cpp
+++ b/gpu/src/GrStencil.cpp
@@ -249,7 +249,7 @@
                                       bool invertedFill,
                                       int* numPasses,
                                       GrStencilSettings settings[kMaxStencilClipPasses]) {
-    if (canBeDirect) {
+    if (canBeDirect && !invertedFill) {
         *numPasses = 0;
         switch (op) {
             case kReplace_SetOp: