Move PathExists to base namespace.

chrome/test/mini_installer_test/run_all_unittests.cc

Index: chrome/test/mini_installer_test/run_all_unittests.cc
diff --git a/chrome/test/mini_installer_test/run_all_unittests.cc b/chrome/test/mini_installer_test/run_all_unittests.cc
index 0fd6b810a595979d91f3be8e002b1c02401bb1ca..06a1c1d821772f85f43f18fef42c97745a0684bf 100644
--- a/chrome/test/mini_installer_test/run_all_unittests.cc
+++ b/chrome/test/mini_installer_test/run_all_unittests.cc
@@ -29,10 +29,10 @@ void BackUpProfile(bool chrome_frame) {
   backup_path = backup_path.Append(
       mini_installer_constants::kChromeUserDataBackupDir);
   // Will check if User Data profile is available.
-  if (file_util::PathExists(path)) {
+  if (base::PathExists(path)) {
     // Will check if User Data is already backed up.
     // If yes, will delete and create new one.
-    if (file_util::PathExists(backup_path))
+    if (base::PathExists(backup_path))
       base::Delete(backup_path, true);
     base::CopyDirectory(path, backup_path, true);
   } else {