[NOT TO COMMIT!] Replace third_party/tcmalloc/chromium with tcmalloc r136 (the latest).

third_party/tcmalloc/chromium/src/base/logging.h

Index: third_party/tcmalloc/chromium/src/base/logging.h
diff --git a/third_party/tcmalloc/chromium/src/base/logging.h b/third_party/tcmalloc/chromium/src/base/logging.h
index b24a03016b9bab10e7dd0f9dfeed268b00baa499..d6a6ab58abf5ab62966a68b1a20e0622d9a5a603 100644
--- a/third_party/tcmalloc/chromium/src/base/logging.h
+++ b/third_party/tcmalloc/chromium/src/base/logging.h
@@ -85,7 +85,7 @@ DECLARE_int32(verbose);
     if (!(condition)) {                                                 \
       WRITE_TO_STDERR("Check failed: " #condition "\n",                 \
                       sizeof("Check failed: " #condition "\n")-1);      \
-      exit(1);                                                          \
+      abort();                                                          \
     }                                                                   \
   } while (0)
 
@@ -95,7 +95,7 @@ DECLARE_int32(verbose);
     if (!(condition)) {                                                        \
       WRITE_TO_STDERR("Check failed: " #condition ": " message "\n",           \
                       sizeof("Check failed: " #condition ": " message "\n")-1);\
-      exit(1);                                                                 \
+      abort();                                                                 \
     }                                                                          \
   } while (0)
 
@@ -118,7 +118,7 @@ enum { DEBUG_MODE = 1 };
                       sizeof("Check failed: " #condition ": ")-1);      \
       WRITE_TO_STDERR(strerror(err_no), strlen(strerror(err_no)));      \
       WRITE_TO_STDERR("\n", sizeof("\n")-1);                            \
-      exit(1);                                                          \
+      abort();                                                          \
     }                                                                   \
   } while (0)
 
@@ -135,7 +135,7 @@ enum { DEBUG_MODE = 1 };
   do {                                                                  \
     if (!((val1) op (val2))) {                                          \
       fprintf(stderr, "Check failed: %s %s %s\n", #val1, #op, #val2);   \
-      exit(1);                                                          \
+      abort();                                                          \
     }                                                                   \
   } while (0)
 
@@ -197,7 +197,7 @@ enum LogSeverity {INFO = -1, WARNING = -2, ERROR = -3, FATAL = -4};
 inline void LogPrintf(int severity, const char* pat, va_list ap) {
   // We write directly to the stderr file descriptor and avoid FILE
   // buffering because that may invoke malloc()
-  char buf[1600];
+  char buf[600];
   perftools_vsnprintf(buf, sizeof(buf)-1, pat, ap);
   if (buf[0] != '\0' && buf[strlen(buf)-1] != '\n') {
     assert(strlen(buf)+1 < sizeof(buf));