[Extensions] Clean up some Permission[sData|Set] includes

extensions/common/permissions/permission_set.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 "extensions/common/permissions/permission_set.h"
 
-#include <algorithm>
-#include <iterator>
-#include <string>
-
 #include "extensions/common/permissions/permissions_info.h"
 #include "extensions/common/url_pattern.h"
-#include "extensions/common/url_pattern_set.h"
 #include "url/gurl.h"
 
 namespace extensions {
 
 namespace {
 
 void AddPatternsAndRemovePaths(const URLPatternSet& set, URLPatternSet* out) {
   DCHECK(out);
   for (URLPatternSet::const_iterator i = set.begin(); i != set.end(); ++i) {
     URLPattern p = *i;
@@ skipping 251 matching lines @@
     if (iter->ImpliesAllHosts()) {
       should_warn_all_hosts_ = WARN_ALL_HOSTS;
       return;
     }
   }
 
   should_warn_all_hosts_ = DONT_WARN_ALL_HOSTS;
 }
 
 }  // namespace extensions