Enable memory profiler when TC_MALLOC is enabled for

third_party/tcmalloc/vendor/src/malloc_extension.cc

Index: third_party/tcmalloc/vendor/src/malloc_extension.cc
===================================================================
--- third_party/tcmalloc/vendor/src/malloc_extension.cc	(revision 148994)
+++ third_party/tcmalloc/vendor/src/malloc_extension.cc	(working copy)
@@ -1,4 +1,4 @@
-// Copyright (c) 2005, Google Inc.
+// Copyright (c) 2012, Google Inc.

[jar (doing other things), 2012/08/01 16:38:19]

I think this file is meant to be a snapshot of exactly what we downloaded (and
already merged), so you shouldn't bother to edit it.  

[ramant (doing other things), 2012/08/01 17:04:25]

Done.

 // All rights reserved.
 // 
 // Redistribution and use in source and binary forms, with or without
@@ -220,6 +220,10 @@
   }
 }
 
+unsigned int MallocExtension::GetBytesAllocatedOnCurrentThread() {
+  return 0;
+}
+
 // -----------------------------------------------------------------------
 // Heap sampling support
 // -----------------------------------------------------------------------