base: Change DCHECK_IS_ON to a macro DCHECK_IS_ON().

chrome/browser/extensions/activity_log/hashed_ad_network_database.cc

 // Copyright 2014 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 "chrome/browser/extensions/activity_log/hashed_ad_network_database.h"
 
 #include <algorithm>  // std::binary_search
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 20 matching lines @@
 HashedAdNetworkDatabase::HashedAdNetworkDatabase()
     : entries_(kHashedAdNetworks),
       num_entries_(kNumHashedAdNetworks) {
 }
 
 HashedAdNetworkDatabase::~HashedAdNetworkDatabase() {
 }
 
 bool HashedAdNetworkDatabase::IsAdNetwork(const GURL& url) const {
 // The list should be sorted. Check once in debug builds.
-#if DCHECK_IS_ON
+#if !DCHECK_IS_OFF
   static bool is_sorted = false;
   if (!is_sorted) {
     std::vector<std::string> list;
     for (int i = 0; i < num_entries_; ++i)
       list.push_back(std::string(entries_[i]));
     is_sorted = base::STLIsSorted(list);
   }
   DCHECK(is_sorted);
 #endif
 
   shorthash hash;
   crypto::SHA256HashString(url.host(), hash, sizeof(shorthash));
   std::string hex_encoded = base::HexEncode(hash, sizeof(shorthash));
   return std::binary_search(entries_,
                             entries_ + num_entries_,
                             hex_encoded.c_str(),
                             CompareEntries);
 }
 
 }  // namespace extensions