First pass at stencil clip mask refactoring

http://codereview.appspot.com/6031043/



git-svn-id: http://skia.googlecode.com/svn/trunk@3692 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/gl/GrGpuGL.h b/src/gpu/gl/GrGpuGL.h
index 928b50e..77b300a 100644
--- a/src/gpu/gl/GrGpuGL.h
+++ b/src/gpu/gl/GrGpuGL.h
@@ -140,7 +140,9 @@
     virtual void onGpuDrawNonIndexed(GrPrimitiveType type,
                                      uint32_t vertexCount,
                                      uint32_t numVertices);
-    virtual void flushScissor(const GrIRect* rect);
+    virtual void enableScissoring(const GrIRect& rect);
+    virtual void disableScissor();
+
     virtual void clearStencil();
     virtual void clearStencilClip(const GrIRect& rect, bool insideClip);
     virtual int getMaxEdges() const;