SkDocument::setDCTEncoder() for old versions of webkit

src/pdf/SkPDFCanon.h

Index: src/pdf/SkPDFCanon.h
diff --git a/src/pdf/SkPDFCanon.h b/src/pdf/SkPDFCanon.h
index 3d2ba6a77d1b4b2ea36023814c11080553e33e65..9ecb3a02d999c16dc853a4c3e7163a9d07e10108 100644
--- a/src/pdf/SkPDFCanon.h
+++ b/src/pdf/SkPDFCanon.h
@@ -10,6 +10,7 @@
 #include "SkBitmap.h"
 #include "SkPDFGraphicState.h"
 #include "SkPDFShader.h"
+#include "SkPixelSerializer.h"
 #include "SkTDArray.h"
 #include "SkTHash.h"
 
@@ -80,6 +81,8 @@ public:
 
     SkTHashMap<uint32_t, bool> fCanEmbedTypeface;
 
+    SkAutoTUnref<SkPixelSerializer> fPixelSerializer;
+
 private:
     struct FontRec {
         SkPDFFont* fFont;