Move file_util_icu to base::i18n namespace

TBR=sky

Review URL: https://codereview.chromium.org/447403002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@288170 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/printing/printed_document.cc b/printing/printed_document.cc
index 6d2a9a0..8265e75f 100644
--- a/printing/printed_document.cc
+++ b/printing/printed_document.cc
@@ -242,7 +242,7 @@
 #else   // OS_WIN
   system_filename = base::UTF16ToUTF8(filename);
 #endif  // OS_WIN
-  file_util::ReplaceIllegalCharactersInPath(&system_filename, '_');
+  base::i18n::ReplaceIllegalCharactersInPath(&system_filename, '_');
   return g_debug_dump_info.Get().Append(system_filename).AddExtension(
       extension);
 }