SkPDF: Factor SkPDFCatalog into SkPDFObjNumMap and SkPDFSubstituteMap

src/pdf/SkPDFGraphicState.cpp

Index: src/pdf/SkPDFGraphicState.cpp
diff --git a/src/pdf/SkPDFGraphicState.cpp b/src/pdf/SkPDFGraphicState.cpp
index 09545d1356da4c6085f385e478148d161caf959b..6922b08e9efcb3e3b12a37da0177f45aec76628d 100644
--- a/src/pdf/SkPDFGraphicState.cpp
+++ b/src/pdf/SkPDFGraphicState.cpp
@@ -114,9 +114,11 @@ bool SkPDFGraphicState::equals(const SkPaint& paint) const {
 
 SkPDFGraphicState::~SkPDFGraphicState() {}
 
-void SkPDFGraphicState::emitObject(SkWStream* stream, SkPDFCatalog* catalog) {
+void SkPDFGraphicState::emitObject(SkWStream* stream,
+                                   const SkPDFObjNumMap& objNumMap,
+                                   const SkPDFSubstituteMap& substitutes) {
     populateDict();
-    SkPDFDict::emitObject(stream, catalog);
+    SkPDFDict::emitObject(stream, objNumMap, substitutes);
 }
 
 // static