Update the tcmalloc vendor branch to r111 (perftools version 1.8)

third_party/tcmalloc/vendor/src/system-alloc.cc

Index: third_party/tcmalloc/vendor/src/system-alloc.cc
===================================================================
--- third_party/tcmalloc/vendor/src/system-alloc.cc	(revision 92996)
+++ third_party/tcmalloc/vendor/src/system-alloc.cc	(working copy)
@@ -133,7 +133,6 @@
   SbrkSysAllocator() : SysAllocator() {
   }
   void* Alloc(size_t size, size_t *actual_size, size_t alignment);
-  void FlagsInitialized() {}
 };
 static char sbrk_space[sizeof(SbrkSysAllocator)];
 
@@ -142,7 +141,6 @@
   MmapSysAllocator() : SysAllocator() {
   }
   void* Alloc(size_t size, size_t *actual_size, size_t alignment);
-  void FlagsInitialized() {}
 };
 static char mmap_space[sizeof(MmapSysAllocator)];
 
@@ -151,7 +149,6 @@
   DevMemSysAllocator() : SysAllocator() {
   }
   void* Alloc(size_t size, size_t *actual_size, size_t alignment);
-  void FlagsInitialized() {}
 };
 
 class DefaultSysAllocator : public SysAllocator {
@@ -160,6 +157,7 @@
     for (int i = 0; i < kMaxAllocators; i++) {
       failed_[i] = true;
       allocs_[i] = NULL;
+      names_[i] = NULL;
     }
   }
   void SetChildAllocator(SysAllocator* alloc, unsigned int index,
@@ -167,10 +165,10 @@
     if (index < kMaxAllocators && alloc != NULL) {
       allocs_[index] = alloc;
       failed_[index] = false;
+      names_[index] = name;
     }
   }
   void* Alloc(size_t size, size_t *actual_size, size_t alignment);
-  void FlagsInitialized() {}
 
  private:
   static const int kMaxAllocators = 2;