Modifications to GrPatherRenderer(Chain) interfaces to support clip mask manager.

R=robertphillips@google.com
Review URL: https://codereview.appspot.com/6904069

git-svn-id: http://skia.googlecode.com/svn/trunk@6741 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/GrReducedClip.cpp b/src/gpu/GrReducedClip.cpp
index 5287858..da42e8c 100644
--- a/src/gpu/GrReducedClip.cpp
+++ b/src/gpu/GrReducedClip.cpp
@@ -325,7 +325,7 @@
                     ++numAAElements;
                 }
                 // Intersecting an inverse shape is the same as differencing the non-inverse shape.
-                // Replacing with a inverse shape the same as setting initialState=kAllIn and
+                // Replacing with an inverse shape is the same as setting initialState=kAllIn and
                 // differencing the non-inverse shape.
                 bool isReplace = SkRegion::kReplace_Op == newElement->getOp();
                 if (newElement->isInverseFilled() &&