Fix compilation with SK_ENABLE_INST_COUNT=1

src/pdf/SkPDFGraphicState.h

Index: src/pdf/SkPDFGraphicState.h
diff --git a/src/pdf/SkPDFGraphicState.h b/src/pdf/SkPDFGraphicState.h
index 84c429105e7042a4f3675c1c0fba8780a5d36505..9182efeffb02080285518b579d2b7d685f13aceb 100644
--- a/src/pdf/SkPDFGraphicState.h
+++ b/src/pdf/SkPDFGraphicState.h
@@ -27,6 +27,7 @@ class SkPDFFormXObject;
 
 */
 class SkPDFGraphicState : public SkPDFDict {
+    SK_DECLARE_INST_COUNT(SkPDFGraphicState)
 public:
     enum SkPDFSMaskMode {
         kAlpha_SMaskMode,
@@ -104,6 +105,7 @@ private:
     static SkPDFObject* GetInvertFunction();
 
     static int Find(const SkPaint& paint);
+    typedef SkPDFDict INHERITED;
 };
 
 #endif