Revert 126020 - Experiment for updating the tcmalloc chromium branch to r144 (gperftools 2.0).

third_party/tcmalloc/chromium/src/span.cc

Index: third_party/tcmalloc/chromium/src/span.cc
===================================================================
--- third_party/tcmalloc/chromium/src/span.cc	(revision 126022)
+++ third_party/tcmalloc/chromium/src/span.cc	(working copy)
@@ -89,6 +89,16 @@
   return result;
 }
 
+#if 0  // This isn't used.  If that changes, rewrite to use TCMalloc_Printer.
+void DLL_Print(const char* label, const Span* list) {
+  MESSAGE("%-10s %p:", label, list);
+  for (const Span* s = list->next; s != list; s = s->next) {
+    MESSAGE(" <%p,%"PRIuPTR",%"PRIuPTR">", s, s->start, s->length);
+  }
+  MESSAGE("%s\n", "");  // %s is to get around a compiler error.
+}
+#endif
+
 void DLL_Prepend(Span* list, Span* span) {
   ASSERT(span->next == NULL);
   ASSERT(span->prev == NULL);