Include implicit_cast.h at all users of it.

util/posix/close_multiple.cc

 // Copyright 2014 The Crashpad Authors. All rights reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
 //     http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
@@ skipping 11 matching lines @@
 #include <string.h>
 #include <unistd.h>
 
 #include <algorithm>
 
 #include "base/basictypes.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/posix/eintr_wrapper.h"
 #include "build/build_config.h"
+#include "util/misc/implicit_cast.h"
 #include "util/numeric/safe_assignment.h"
 
 // Everything in this file is expected to execute between fork() and exec(),
 // so everything called here must be acceptable in this context. However,
 // logging code that is not expected to execute under normal circumstances is
 // currently permitted.
 
 namespace crashpad {
 namespace {
 
@@ skipping 107 matching lines @@
   max_fd = std::max(max_fd, getdtablesize());
 
   for (int entry_fd = fd; entry_fd < max_fd; ++entry_fd) {
     if (entry_fd != preserve_fd) {
       CloseNowOrOnExec(entry_fd, true);
     }
   }
 }
 
 }  // namespace crashpad