Switch to standard integer types in base/trace_event/.

base/trace_event/trace_event_memory_overhead.h

 // Copyright 2015 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.
 
 #ifndef BASE_TRACE_EVENT_TRACE_EVENT_MEMORY_OVERHEAD_H_
 #define BASE_TRACE_EVENT_TRACE_EVENT_MEMORY_OVERHEAD_H_
 
+#include <stddef.h>
+
 #include "base/base_export.h"
 #include "base/containers/hash_tables.h"
 #include "base/containers/small_map.h"
+#include "base/macros.h"
 
 namespace base {
 
 class RefCountedString;
 class Value;
 
 namespace trace_event {
 
 class ProcessMemoryDump;
 
@@ skipping 44 matching lines @@
                            size_t allocated_size_in_bytes,
                            size_t resident_size_in_bytes);
 
   DISALLOW_COPY_AND_ASSIGN(TraceEventMemoryOverhead);
 };
 
 }  // namespace trace_event
 }  // namespace base
 
 #endif  // BASE_TRACE_EVENT_TRACE_EVENT_MEMORY_OVERHEAD_H_