Upgrade Blink to milliseconds-based last modified filetimes, part 2.

content/child/file_info_util.cc

Index: content/child/file_info_util.cc
diff --git a/content/child/file_info_util.cc b/content/child/file_info_util.cc
index ba257310f46da7d5a4c3343ffd88ce856bec803d..9d616c0427f349f9770ec9cde8daeb2cac945116 100644
--- a/content/child/file_info_util.cc
+++ b/content/child/file_info_util.cc
@@ -13,10 +13,14 @@ void FileInfoToWebFileInfo(const base::File::Info& file_info,
                            blink::WebFileInfo* web_file_info) {
   DCHECK(web_file_info);
   // WebKit now expects NaN as uninitialized/null Date.
-  if (file_info.last_modified.is_null())
+  if (file_info.last_modified.is_null()) {
     web_file_info->modificationTime = std::numeric_limits<double>::quiet_NaN();
-  else
+    web_file_info->modificationTimeMS =
+        std::numeric_limits<double>::quiet_NaN();
+  } else {
     web_file_info->modificationTime = file_info.last_modified.ToDoubleT();
+    web_file_info->modificationTimeMS = file_info.last_modified.ToJsTime();
+  }
   web_file_info->length = file_info.size;
   if (file_info.is_directory)
     web_file_info->type = blink::WebFileInfo::TypeDirectory;