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

third_party/tcmalloc/chromium/src/memory_region_map.h

Index: third_party/tcmalloc/chromium/src/memory_region_map.h
===================================================================
--- third_party/tcmalloc/chromium/src/memory_region_map.h	(revision 126022)
+++ third_party/tcmalloc/chromium/src/memory_region_map.h	(working copy)
@@ -252,10 +252,6 @@
   static RegionIterator BeginRegionLocked();
   static RegionIterator EndRegionLocked();
 
-  // Return the accumulated sizes of mapped and unmapped regions.
-  static int64 MapSize() { return map_size_; }
-  static int64 UnmapSize() { return unmap_size_; }
-
   // Effectively private type from our .cc =================================
   // public to let us declare global objects:
   union RegionSetRep;
@@ -290,11 +286,6 @@
   // The thread id of the thread that's inside the recursive lock.
   static pthread_t lock_owner_tid_;
 
-  // Total size of all mapped pages so far
-  static int64 map_size_;
-  // Total size of all unmapped pages so far
-  static int64 unmap_size_;
-
   // helpers ==================================================================
 
   // Helper for FindRegion and FindAndMarkStackRegion: