Move Copy* into the base namespace.

chrome/browser/spellchecker/spellcheck_custom_dictionary.cc

Index: chrome/browser/spellchecker/spellcheck_custom_dictionary.cc
diff --git a/chrome/browser/spellchecker/spellcheck_custom_dictionary.cc b/chrome/browser/spellchecker/spellcheck_custom_dictionary.cc
index c3d248446164a9233d6ff472b2d66e781aec5d8a..cc3db9a1a693103a4a346e300d957096e5c99bea 100644
--- a/chrome/browser/spellchecker/spellcheck_custom_dictionary.cc
+++ b/chrome/browser/spellchecker/spellcheck_custom_dictionary.cc
@@ -102,7 +102,7 @@ void LoadDictionaryFileReliably(WordList& custom_words,
   if (LoadFile(backup, custom_words) != VALID_CHECKSUM)
     return;
   // Backup checksum is valid. Restore the backup.
-  file_util::CopyFile(backup, path);
+  base::CopyFile(backup, path);
 }
 
 // Backs up the original dictionary, saves |custom_words| and its checksum into
@@ -119,7 +119,7 @@ void SaveDictionaryFileReliably(
   }
   std::string checksum = base::MD5String(content.str());
   content << CHECKSUM_PREFIX << checksum;
-  file_util::CopyFile(path, path.AddExtension(BACKUP_EXTENSION));
+  base::CopyFile(path, path.AddExtension(BACKUP_EXTENSION));
   base::ImportantFileWriter::WriteFileAtomically(path, content.str());
 }