Switch to standard integer types in tools/.

tools/android/heap_profiler/heap_profiler_integrationtest.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <dlfcn.h>
 #include <fcntl.h>
+#include <stddef.h>
 #include <stdlib.h>
 #include <string.h>
 #include <sys/mman.h>
 #include <unistd.h>
 #include <map>
 
 #include "testing/gtest/include/gtest/gtest.h"
 #include "tools/android/heap_profiler/heap_profiler.h"
 
 namespace {
@@ skipping 152 matching lines @@
     char* const env[] = {env_ld_preload, env_ld_lib_path, 0};
     execve("/proc/self/exe", argv, env);
     // execve() never returns, unless something goes wrong.
     perror("execve");
     assert(false);
   }
 
   testing::InitGoogleTest(&argc, argv);
   return RUN_ALL_TESTS();
 }