Fix compilation with SK_ENABLE_INST_COUNT=1

src/pdf/SkPDFTypes.cpp

Index: src/pdf/SkPDFTypes.cpp
diff --git a/src/pdf/SkPDFTypes.cpp b/src/pdf/SkPDFTypes.cpp
index ed02d2bd12daf658bcd5c5bc7daaefa69dfbb79b..55871c507d2fc99c62ed4504a3390ad9dd36c837 100644
--- a/src/pdf/SkPDFTypes.cpp
+++ b/src/pdf/SkPDFTypes.cpp
@@ -17,16 +17,6 @@
     #define SNPRINTF    snprintf
 #endif
 
-SK_DEFINE_INST_COUNT(SkPDFArray)
-SK_DEFINE_INST_COUNT(SkPDFBool)
-SK_DEFINE_INST_COUNT(SkPDFDict)
-SK_DEFINE_INST_COUNT(SkPDFInt)
-SK_DEFINE_INST_COUNT(SkPDFName)
-SK_DEFINE_INST_COUNT(SkPDFObject)
-SK_DEFINE_INST_COUNT(SkPDFObjRef)
-SK_DEFINE_INST_COUNT(SkPDFScalar)
-SK_DEFINE_INST_COUNT(SkPDFString)
-
 ///////////////////////////////////////////////////////////////////////////////
 
 void SkPDFObject::emit(SkWStream* stream, SkPDFCatalog* catalog,