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

chrome/browser/history/history_types.cc

Index: chrome/browser/history/history_types.cc
diff --git a/chrome/browser/history/history_types.cc b/chrome/browser/history/history_types.cc
index 09fed813fffcb57ded6a624f4aa240cc4394ba3a..19521fae3fe61eb086cd7b6275fafdbb7da9fece 100644
--- a/chrome/browser/history/history_types.cc
+++ b/chrome/browser/history/history_types.cc
@@ -107,6 +107,10 @@ URLResult::URLResult(const GURL& url,
     : URLRow(url) {
   title_match_positions_ = title_matches;
 }
+URLResult::URLResult(const URLRow& url_row)
+    : URLRow(url_row),
+      blocked_visit_(false) {
+}
 
 URLResult::~URLResult() {
 }
@@ -119,6 +123,11 @@ void URLResult::SwapResult(URLResult* other) {
   std::swap(blocked_visit_, other->blocked_visit_);
 }
 
+// static
+bool URLResult::CompareVisitTime(const URLResult& lhs, const URLResult& rhs) {
+  return lhs.visit_time() > rhs.visit_time();
+}
+
 // QueryResults ----------------------------------------------------------------
 
 QueryResults::QueryResults() : reached_beginning_(false) {