Clean up header files.

components/policy/core/common/schema.cc

 // Copyright 2013 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 "components/policy/core/common/schema.h"
 
+#include <limits.h>
 #include <stddef.h>
 
 #include <algorithm>
 #include <climits>
 #include <map>
 #include <utility>
 
 #include "base/compiler_specific.h"
 #include "base/logging.h"
 #include "base/macros.h"
@@ skipping 1085 matching lines @@
     return false;
   } else {
     int index = rnode->string_pattern_restriction.pattern_index;
     DCHECK(index == rnode->string_pattern_restriction.pattern_index_backup);
     re2::RE2* regex = storage_->CompileRegex(*storage_->string_enums(index));
     return re2::RE2::PartialMatch(str, *regex);
   }
 }
 
 }  // namespace policy