Move WriteFile and WriteFileDescriptor from file_util to base namespace.

chrome/browser/chromeos/login/parallel_authenticator_unittest.cc

Index: chrome/browser/chromeos/login/parallel_authenticator_unittest.cc
diff --git a/chrome/browser/chromeos/login/parallel_authenticator_unittest.cc b/chrome/browser/chromeos/login/parallel_authenticator_unittest.cc
index 0ad3bdd47d1fb7d49c90faeccadd9bc7cf0948f8..dad81fcfe2584e8e73e9bcf0dbf5f759e9fa0716 100644
--- a/chrome/browser/chromeos/login/parallel_authenticator_unittest.cc
+++ b/chrome/browser/chromeos/login/parallel_authenticator_unittest.cc
@@ -97,7 +97,7 @@ class ParallelAuthenticatorTest : public testing::Test {
     base::FilePath out;
     FILE* tmp_file = base::CreateAndOpenTemporaryFile(&out);
     EXPECT_NE(tmp_file, static_cast<FILE*>(NULL));
-    EXPECT_EQ(file_util::WriteFile(out, data, data_len), data_len);
+    EXPECT_EQ(base::WriteFile(out, data, data_len), data_len);
     EXPECT_TRUE(base::CloseFile(tmp_file));
     return out;
   }