Move scoped_temp_dir from base to base/files

base/files/scoped_temp_dir_unittest.cc

Index: base/files/scoped_temp_dir_unittest.cc
diff --git a/base/scoped_temp_dir_unittest.cc b/base/files/scoped_temp_dir_unittest.cc
similarity index 97%
rename from base/scoped_temp_dir_unittest.cc
rename to base/files/scoped_temp_dir_unittest.cc
index eddea833e533ef3eef3c32489e43f60cbe801c73..8497ac631dd2c768141d6650b3badcfa7e184b51 100644
--- a/base/scoped_temp_dir_unittest.cc
+++ b/base/files/scoped_temp_dir_unittest.cc
@@ -5,10 +5,12 @@
 #include <string>
 
 #include "base/file_util.h"
+#include "base/files/scoped_temp_dir.h"
 #include "base/platform_file.h"
-#include "base/scoped_temp_dir.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
+namespace base {
+
 TEST(ScopedTempDir, FullPath) {
   FilePath test_path;
   file_util::CreateNewTempDirectory(FILE_PATH_LITERAL("scoped_temp_dir"),
@@ -111,3 +113,5 @@ TEST(ScopedTempDir, LockedTempDir) {
   EXPECT_TRUE(dir.Delete());
 }
 #endif  // defined(OS_WIN)
+
+}  // namespace base