SkPDF: clean up uses of deprecated calls in other SkPDF classes

src/pdf/SkPDFTypes.h

Index: src/pdf/SkPDFTypes.h
diff --git a/src/pdf/SkPDFTypes.h b/src/pdf/SkPDFTypes.h
index f258e384e5119fd9dfb202f29760280ed6974261..bc24dd5cf5c7c06069b98bc585f70cacfb39f9d3 100644
--- a/src/pdf/SkPDFTypes.h
+++ b/src/pdf/SkPDFTypes.h
@@ -353,6 +353,7 @@ public:
      *  @param key   The text of the key for this dictionary entry.
      *  @param value The value for this dictionary entry.
      */
+    void insertBool(const char key[], bool value);
     void insertInt(const char key[], int32_t value);
     void insertInt(const char key[], size_t value);
     void insertScalar(const char key[], SkScalar value);