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

third_party/tcmalloc/chromium/src/span.h

Index: third_party/tcmalloc/chromium/src/span.h
===================================================================
--- third_party/tcmalloc/chromium/src/span.h	(revision 126022)
+++ third_party/tcmalloc/chromium/src/span.h	(working copy)
@@ -96,6 +96,11 @@
 // Return the length of the linked list. O(n)
 int DLL_Length(const Span* list);
 
+// Print the contents of the list to stderr.
+#if 0  // This isn't used.
+void DLL_Print(const char* label, const Span* list);
+#endif
+
 }  // namespace tcmalloc
 
 #endif  // TCMALLOC_SPAN_H_