mini_installer: Change to use _countof rather than base's arraysize macro.

chrome/installer/mini_installer/mini_string.cc

 // Copyright (c) 2011 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/installer/mini_installer/mini_string.h"
 
 #include <windows.h>
 
 namespace {
 
@@ skipping 50 matching lines @@
 
   // If we fail, we do not want to leave the string with partially copied
   // contents.  The reason for this is that we use these strings mostly for
   // named objects such as files.  If we copy a partial name, then that could
   // match with something we do not want it to match with.
   // Furthermore, since SafeStrCopy is called from SafeStrCat, we do not
   // want to mutate the string in case the caller handles the error of a
   // failed concatenation.  For example:
   //
   // wchar_t buf[5] = {0};
-  // if (!SafeStrCat(buf, arraysize(buf), kLongName))
-  //   SafeStrCat(buf, arraysize(buf), kShortName);
+  // if (!SafeStrCat(buf, _countof(buf), kLongName))
+  //   SafeStrCat(buf, _countof(buf), kShortName);
   //
   // If we were to return false in the first call to SafeStrCat but still
   // mutate the buffer, the buffer will be in an unexpected state.
   *dest = L'\0';
   return false;
 }
 
 // Safer replacement for lstrcat function.
 bool SafeStrCat(wchar_t* dest, size_t dest_size, const wchar_t* src) {
   // Use SafeStrLen instead of lstrlen just in case the |dest| buffer isn't
@@ skipping 70 matching lines @@
     return NULL;
 
   wchar_t* current = &path[size - 1];
   while (current != path && L'\\' != *current)
     --current;
 
   return (current == path) ? NULL : (current + 1);
 }
 
 }  // namespace mini_installer