PDF: add support for named destinations

src/pipe/SkGPipeRead.cpp

Index: src/pipe/SkGPipeRead.cpp
===================================================================
--- src/pipe/SkGPipeRead.cpp	(revision 7989)
+++ src/pipe/SkGPipeRead.cpp	(working copy)
@@ -53,6 +53,9 @@
         case kXfermode_PaintFlat:
             paint->setXfermode((SkXfermode*)obj);
             break;
+        case kAnnotation_PaintFlat:
+            paint->setAnnotation((SkAnnotation*)obj);
+            break;
         default:
             SkDEBUGFAIL("never gets here");
     }