PDF: add support for named destinations.

src/pipe/SkGPipeWrite.cpp

Index: src/pipe/SkGPipeWrite.cpp
===================================================================
--- src/pipe/SkGPipeWrite.cpp	(revision 8005)
+++ src/pipe/SkGPipeWrite.cpp	(working copy)
@@ -6,6 +6,7 @@
  * found in the LICENSE file.
  */
 
+#include "SkAnnotation.h"
 #include "SkBitmapHeap.h"
 #include "SkCanvas.h"
 #include "SkColorFilter.h"
@@ -47,6 +48,7 @@
         case kShader_PaintFlat:         return paint.getShader();
         case kImageFilter_PaintFlat:    return paint.getImageFilter();
         case kXfermode_PaintFlat:       return paint.getXfermode();
+        case kAnnotation_PaintFlat:     return paint.getAnnotation();
     }
     SkDEBUGFAIL("never gets here");
     return NULL;