[NOT TO COMMIT!] Merge Chromium-specific changes in tcmalloc thru. the original gperftools r136.

third_party/tcmalloc/chromium/src/heap-profile-table.cc

Index: third_party/tcmalloc/chromium/src/heap-profile-table.cc
diff --git a/third_party/tcmalloc/chromium/src/heap-profile-table.cc b/third_party/tcmalloc/chromium/src/heap-profile-table.cc
index 1d799240cd2912208a3668fa3972df8a32993678..9d60b690ffde501dbdbdedaf8f603dc623c044cc 100644
--- a/third_party/tcmalloc/chromium/src/heap-profile-table.cc
+++ b/third_party/tcmalloc/chromium/src/heap-profile-table.cc
@@ -526,7 +526,10 @@ bool HeapProfileTable::WriteProfile(const char* file_name,
 void HeapProfileTable::CleanupOldProfiles(const char* prefix) {
   if (!FLAGS_cleanup_old_heap_profiles)
     return;
-  string pattern = string(prefix) + ".*" + kFileExt;
+  char buf[1000];
+  snprintf(buf, 1000,"%s.%05d.", prefix, getpid());
+  string pattern = string(buf) + ".*" + kFileExt;
+
 #if defined(HAVE_GLOB_H)
   glob_t g;
   const int r = glob(pattern.c_str(), GLOB_ERR, NULL, &g);