S390: Fix S390 native build break due to printf format mismatch.

src/profiler/heap-snapshot-generator.cc

Index: src/profiler/heap-snapshot-generator.cc
diff --git a/src/profiler/heap-snapshot-generator.cc b/src/profiler/heap-snapshot-generator.cc
index 0382913b77d81ee0bb0aa16eadcaf56b625fbac7..26630099a867831cfba5c439e822fb14ffbd49b6 100644
--- a/src/profiler/heap-snapshot-generator.cc
+++ b/src/profiler/heap-snapshot-generator.cc
@@ -80,7 +80,7 @@ void HeapEntry::SetIndexedReference(HeapGraphEdge::Type type,
 void HeapEntry::Print(
     const char* prefix, const char* edge_name, int max_depth, int indent) {
   STATIC_ASSERT(sizeof(unsigned) == sizeof(id()));
-  base::OS::Print("%6" V8PRIuPTR " @%6u %*c %s%s: ", self_size(), id(), indent,
+  base::OS::Print("%6" PRIuS " @%6u %*c %s%s: ", self_size(), id(), indent,
                   ' ', prefix, edge_name);
   if (type() != kString) {
     base::OS::Print("%s %.40s\n", TypeAsString(), name_);