Fixed importing of empty folders from HTML bookmarks file

chrome/test/data/bookmark_html_reader/empty_folder.html

Index: chrome/test/data/bookmark_html_reader/empty_folder.html
diff --git a/chrome/test/data/bookmark_html_reader/empty_folder.html b/chrome/test/data/bookmark_html_reader/empty_folder.html
new file mode 100644
index 0000000000000000000000000000000000000000..a5e75bbdae93b76d1f1c510381c1f532c0009b56
--- /dev/null
+++ b/chrome/test/data/bookmark_html_reader/empty_folder.html
@@ -0,0 +1,24 @@
+<!DOCTYPE NETSCAPE-Bookmark-file-1>
+<!-- This is an automatically generated file.
+     It will be read and overwritten.
+     DO NOT EDIT! -->
+<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=UTF-8">
+<TITLE>Bookmarks</TITLE>
+<H1>Bookmarks Menu</H1>
+
+<DL><p>
+    <DT><H3 ADD_DATE="1295938143" LAST_MODIFIED="1295938145">Empty's Parent</H3>
+    <DL><p>
+        <DT><H3 ADD_DATE="1295938143" LAST_MODIFIED="1295938145"></H3>
+        <DL><p>
+        </DL><p>
+    </DL><p>
+    <DT><H3 ADD_DATE="1295938000" LAST_MODIFIED="1295939000"></H3>
+    <DL><p>
+        <DT><A HREF="http://www.tamurayukari.com/" ADD_DATE="1234567890" LAST_MODIFIED="1234567891">[Tamura Yukari.com]</A>
+    </DL><p>
+    <DT><H3 ADD_DATE="1295938000" LAST_MODIFIED="1295939000">Not Empty But Default</H3>
+    <DL><p>
+        <DT><A HREF="http://www.google.com/" ADD_DATE="0000000000" LAST_MODIFIED="0000000000">Google</A>
+    </DL><p>
+</DL><p>