Move PathExists to base namespace.

chrome/browser/spellchecker/spellcheck_hunspell_dictionary.cc

Index: chrome/browser/spellchecker/spellcheck_hunspell_dictionary.cc
diff --git a/chrome/browser/spellchecker/spellcheck_hunspell_dictionary.cc b/chrome/browser/spellchecker/spellcheck_hunspell_dictionary.cc
index a6f5169e9870f4ec6e33b6566532239242e5234c..67dc923ee346d1663c0cf056934aa12e16346360 100644
--- a/chrome/browser/spellchecker/spellcheck_hunspell_dictionary.cc
+++ b/chrome/browser/spellchecker/spellcheck_hunspell_dictionary.cc
@@ -80,7 +80,7 @@ scoped_ptr<DictionaryFile> OpenDictionaryFile(
   base::FilePath user_dir;
   PathService::Get(chrome::DIR_USER_DATA, &user_dir);
   base::FilePath fallback = user_dir.Append(file->path.BaseName());
-  if (!file_util::PathExists(file->path) && file_util::PathExists(fallback))
+  if (!base::PathExists(file->path) && base::PathExists(fallback))
     file->path = fallback;
 #endif
 
@@ -89,7 +89,7 @@ scoped_ptr<DictionaryFile> OpenDictionaryFile(
   bool bdict_is_valid;
   {
     base::MemoryMappedFile map;
-    bdict_is_valid = file_util::PathExists(file->path) &&
+    bdict_is_valid = base::PathExists(file->path) &&
         map.Initialize(file->path) &&
         hunspell::BDict::Verify(reinterpret_cast<const char*>(map.data()),
                                 map.length());