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

third_party/tcmalloc/vendor/src/heap-checker.cc

Index: third_party/tcmalloc/vendor/src/heap-checker.cc
===================================================================
--- third_party/tcmalloc/vendor/src/heap-checker.cc	(revision 92996)
+++ third_party/tcmalloc/vendor/src/heap-checker.cc	(working copy)
@@ -52,7 +52,7 @@
 #include <time.h>
 #include <assert.h>
 
-#ifdef HAVE_LINUX_PTRACE_H
+#if defined(HAVE_LINUX_PTRACE_H) && !defined(__native_client__)
 #include <linux/ptrace.h>
 #endif
 #ifdef HAVE_SYS_SYSCALL_H
@@ -278,10 +278,6 @@
 static const int heap_checker_info_level = 0;
 
 //----------------------------------------------------------------------
-// Cancel our InitialMallocHook_* if present.
-static void CancelInitialMallocHooks();  // defined below
-
-//----------------------------------------------------------------------
 // HeapLeakChecker's own memory allocator that is
 // independent of the normal program allocator.
 //----------------------------------------------------------------------
@@ -1473,7 +1469,7 @@
                           IgnoredObjectsMap;
     }
     if (!ignored_objects->insert(make_pair(AsInt(ptr), object_size)).second) {
-      RAW_LOG(FATAL, "Object at %p is already being ignored", ptr);
+      RAW_LOG(WARNING, "Object at %p is already being ignored", ptr);
     }
   }
 }