Move ReadFileToString to the base namespace.

net/ftp/ftp_directory_listing_parser_unittest.cc

Index: net/ftp/ftp_directory_listing_parser_unittest.cc
diff --git a/net/ftp/ftp_directory_listing_parser_unittest.cc b/net/ftp/ftp_directory_listing_parser_unittest.cc
index 4eaf1dd97e4067f0b1ff0a3db153ca173d0bfe7f..73d19bc6cac3e6c244b6e9dbc5fab55cbb80dd4c 100644
--- a/net/ftp/ftp_directory_listing_parser_unittest.cc
+++ b/net/ftp/ftp_directory_listing_parser_unittest.cc
@@ -42,8 +42,8 @@ TEST_P(FtpDirectoryListingParserTest, Parse) {
   SCOPED_TRACE(base::StringPrintf("Test case: %s", GetParam()));
 
   std::string test_listing;
-  EXPECT_TRUE(file_util::ReadFileToString(test_dir.AppendASCII(GetParam()),
-                                          &test_listing));
+  EXPECT_TRUE(base::ReadFileToString(test_dir.AppendASCII(GetParam()),
+                                     &test_listing));
 
   std::vector<FtpDirectoryListingEntry> entries;
   EXPECT_EQ(OK, ParseFtpDirectoryListing(test_listing,
@@ -51,7 +51,7 @@ TEST_P(FtpDirectoryListingParserTest, Parse) {
                                          &entries));
 
   std::string expected_listing;
-  ASSERT_TRUE(file_util::ReadFileToString(
+  ASSERT_TRUE(base::ReadFileToString(
                   test_dir.AppendASCII(std::string(GetParam()) + ".expected"),
                   &expected_listing));