Add perspective support to the gpu aa hairline renderer.

Review URL: http://codereview.appspot.com/4969071/



git-svn-id: http://skia.googlecode.com/svn/trunk@2249 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/gpu/src/GrAAHairLinePathRenderer.h b/gpu/src/GrAAHairLinePathRenderer.h
index c7d2dc7..c1d61dc 100644
--- a/gpu/src/GrAAHairLinePathRenderer.h
+++ b/gpu/src/GrAAHairLinePathRenderer.h
@@ -47,6 +47,7 @@
     // have to recreate geometry if stages in use changes :(
     GrDrawTarget::StageBitfield fPreviousStages;
     int                         fPreviousRTHeight;
+    SkVector                    fPreviousTranslate;
     GrIRect                     fClipRect;
 
     // this path renderer draws everything in device coordinates