Move temp file functions to base namespace.

chrome/installer/util/delete_after_reboot_helper_unittest.cc

Index: chrome/installer/util/delete_after_reboot_helper_unittest.cc
diff --git a/chrome/installer/util/delete_after_reboot_helper_unittest.cc b/chrome/installer/util/delete_after_reboot_helper_unittest.cc
index c97cecdfa41d1740119b992fb40ea95fab889c73..d5a65812fab60805c4c3bcf6e22e35d3e0c56aa6 100644
--- a/chrome/installer/util/delete_after_reboot_helper_unittest.cc
+++ b/chrome/installer/util/delete_after_reboot_helper_unittest.cc
@@ -24,13 +24,12 @@ class DeleteAfterRebootHelperTest : public testing::Test {
  protected:
   virtual void SetUp() {
     // Create a temporary directory for testing and fill it with some files.
-    std::wstring no_prefix;
-    file_util::CreateNewTempDirectory(no_prefix, &temp_dir_);
-    file_util::CreateTemporaryFileInDir(temp_dir_, &temp_file_);
+    base::CreateNewTempDirectory(base::FilePath::StringType(), &temp_dir_);
+    base::CreateTemporaryFileInDir(temp_dir_, &temp_file_);
 
     temp_subdir_ = temp_dir_.Append(L"subdir");
     file_util::CreateDirectory(temp_subdir_);
-    file_util::CreateTemporaryFileInDir(temp_subdir_, &temp_subdir_file_);
+    base::CreateTemporaryFileInDir(temp_subdir_, &temp_subdir_file_);
 
     // Copy the current pending moves and then clear it if we can:
     if (IsUserAnAdmin()) {