base: Change DCHECK_IS_ON to a macro DCHECK_IS_ON().

chrome/installer/util/shell_util.cc

 // Copyright (c) 2012 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.
 //
 // This file defines functions that integrate Chrome in Windows shell. These
 // functions can be used by Chrome as well as Chrome installer. All of the
 // work is done by the local functions defined in anonymous namespace in
 // this class.
 
 #include "chrome/installer/util/shell_util.h"
@@ skipping 1263 matching lines @@
 }
 
 // A helper function that probes default protocol handler registration (in a
 // manner appropriate for the current version of Windows) to determine if
 // Chrome is the default handler for |protocols|.  Returns IS_DEFAULT
 // only if Chrome is the default for all specified protocols.
 ShellUtil::DefaultState ProbeProtocolHandlers(
     const base::FilePath& chrome_exe,
     const wchar_t* const* protocols,
     size_t num_protocols) {
-#if DCHECK_IS_ON
+#if !DCHECK_IS_OFF
   DCHECK(!num_protocols || protocols);
   for (size_t i = 0; i < num_protocols; ++i)
     DCHECK(protocols[i] && *protocols[i]);
 #endif
 
   const base::win::Version windows_version = base::win::GetVersion();
 
   if (windows_version >= base::win::VERSION_WIN8)
     return ProbeCurrentDefaultHandlers(chrome_exe, protocols, num_protocols);
   else if (windows_version >= base::win::VERSION_VISTA)
@@ skipping 1174 matching lines @@
   base::string16 key_path(ShellUtil::kRegClasses);
   key_path.push_back(base::FilePath::kSeparators[0]);
   key_path.append(prog_id);
   return InstallUtil::DeleteRegistryKey(
       HKEY_CURRENT_USER, key_path, WorkItem::kWow64Default);
 
   // TODO(mgiuca): Remove the extension association entries. This requires that
   // the extensions associated with a particular prog_id are stored in that
   // prog_id's key.
 }