Replace FTS in the history_service with a brute force text search.

chrome/browser/history/history_types.h

Index: chrome/browser/history/history_types.h
diff --git a/chrome/browser/history/history_types.h b/chrome/browser/history/history_types.h
index c99457d636cee5990feaa1f9d362f64754b133b6..853f84e468d9ee8635de53893dc8d95b88e1c333 100644
--- a/chrome/browser/history/history_types.h
+++ b/chrome/browser/history/history_types.h
@@ -290,6 +290,7 @@ struct PageVisit {
 class URLResult : public URLRow {
  public:
   URLResult();
+  explicit URLResult(const URLRow& url_row);
   URLResult(const GURL& url, base::Time visit_time);
   // Constructor that create a URLResult from the specified URL and title match
   // positions from title_matches.
@@ -315,6 +316,8 @@ class URLResult : public URLRow {
 
   void SwapResult(URLResult* other);
 
+  static bool CompareVisitTime(const URLResult& lhs, const URLResult& rhs);
+
  private:
   friend class HistoryBackend;