Move temp file functions to base namespace.

base/files/scoped_temp_dir_unittest.cc

Index: base/files/scoped_temp_dir_unittest.cc
diff --git a/base/files/scoped_temp_dir_unittest.cc b/base/files/scoped_temp_dir_unittest.cc
index 02b910caa7b9713d77e0de0b8e6c2b803256589c..fe243ce2ee5691c60e9664355e7033860286eafa 100644
--- a/base/files/scoped_temp_dir_unittest.cc
+++ b/base/files/scoped_temp_dir_unittest.cc
@@ -13,8 +13,8 @@ namespace base {
 
 TEST(ScopedTempDir, FullPath) {
   FilePath test_path;
-  file_util::CreateNewTempDirectory(FILE_PATH_LITERAL("scoped_temp_dir"),
-                                    &test_path);
+  base::CreateNewTempDirectory(FILE_PATH_LITERAL("scoped_temp_dir"),
+                               &test_path);
 
   // Against an existing dir, it should get destroyed when leaving scope.
   EXPECT_TRUE(DirectoryExists(test_path));
@@ -64,8 +64,8 @@ TEST(ScopedTempDir, TempDir) {
 TEST(ScopedTempDir, UniqueTempDirUnderPath) {
   // Create a path which will contain a unique temp path.
   FilePath base_path;
-  ASSERT_TRUE(file_util::CreateNewTempDirectory(FILE_PATH_LITERAL("base_dir"),
-                                                &base_path));
+  ASSERT_TRUE(base::CreateNewTempDirectory(FILE_PATH_LITERAL("base_dir"),
+                                           &base_path));
 
   FilePath test_path;
   {