Move WriteFile and WriteFileDescriptor from file_util to base namespace.

chrome/browser/safe_browsing/download_feedback_unittest.cc

Index: chrome/browser/safe_browsing/download_feedback_unittest.cc
diff --git a/chrome/browser/safe_browsing/download_feedback_unittest.cc b/chrome/browser/safe_browsing/download_feedback_unittest.cc
index 6f42ff75509afaa3b6238d36cd594f892cd6b19b..460c5aef5da99bc28dc0253f7a353616f0ff63a0 100644
--- a/chrome/browser/safe_browsing/download_feedback_unittest.cc
+++ b/chrome/browser/safe_browsing/download_feedback_unittest.cc
@@ -119,8 +119,8 @@ class DownloadFeedbackTest : public testing::Test {
     upload_file_path_ = temp_dir_.path().AppendASCII("test file");
     upload_file_data_ = "data";
     ASSERT_EQ(static_cast<int>(upload_file_data_.size()),
-              file_util::WriteFile(upload_file_path_, upload_file_data_.data(),
-                                   upload_file_data_.size()));
+              base::WriteFile(upload_file_path_, upload_file_data_.data(),
+                              upload_file_data_.size()));
     TwoPhaseUploader::RegisterFactory(&two_phase_uploader_factory_);
   }