run iwyu on base!

base/ref_counted_memory.cc

 // Copyright (c) 2010 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 <stddef.h>
+#include <vector>
+
 #include "base/ref_counted_memory.h"
 
 RefCountedMemory::RefCountedMemory() {
 }
 
 RefCountedMemory::~RefCountedMemory() {
 }
 
 const unsigned char* RefCountedStaticMemory::front() const {
   return data_;
@@ skipping 22 matching lines @@
   // expects a NULL.
   return size() ? &data.front() : NULL;
 }
 
 size_t RefCountedBytes::size() const {
   return data.size();
 }
 
 RefCountedBytes::~RefCountedBytes() {
 }