Change base/file_utils.h includes to base/files/file_utils.h in chrome/

Review URL: https://codereview.chromium.org/486843004

Cr-Commit-Position: refs/heads/master@{#291880}
diff --git a/chrome/browser/devtools/devtools_file_system_indexer.cc b/chrome/browser/devtools/devtools_file_system_indexer.cc
index 6f7f80d..d0b0b8c 100644
--- a/chrome/browser/devtools/devtools_file_system_indexer.cc
+++ b/chrome/browser/devtools/devtools_file_system_indexer.cc
@@ -8,8 +8,8 @@
 
 #include "base/bind.h"
 #include "base/callback.h"
-#include "base/file_util.h"
 #include "base/files/file_enumerator.h"
+#include "base/files/file_util.h"
 #include "base/files/file_util_proxy.h"
 #include "base/lazy_instance.h"
 #include "base/logging.h"