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

chrome/browser/history/url_database.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_HISTORY_URL_DATABASE_H_
 #define CHROME_BROWSER_HISTORY_URL_DATABASE_H_
 
 #include "base/basictypes.h"
 #include "chrome/browser/history/history_types.h"
+#include "chrome/browser/history/query_parser.h"
 #include "chrome/browser/search_engines/template_url_id.h"
 #include "sql/statement.h"
 
 class GURL;
 
 namespace sql {
 class Connection;
 }
 
 namespace history {
@@ skipping 162 matching lines @@
   // If found, fills in |info| and returns true; otherwise returns false,
   // leaving |info| unchanged.
   // We allow matches of exactly |base| iff |allow_base| is true.
   bool FindShortestURLFromBase(const std::string& base,
                                const std::string& url,
                                int min_visits,
                                int min_typed,
                                bool allow_base,
                                history::URLRow* info);
 
+  // History search ------------------------------------------------------------
+
+  // Performs a brute force search over the database to find any URLs or titles
+  // which match the |query| string.  Returns any matches in |results|.
+  bool GetTextMatches(const string16& query, URLRows* results);
+
   // Keyword Search Terms ------------------------------------------------------
 
   // Sets the search terms for the specified url/keyword pair.
   bool SetKeywordSearchTermsForURL(URLID url_id,
                                    TemplateURLID keyword_id,
                                    const string16& term);
 
   // Looks up a keyword search term given a url id. Returns all the search terms
   // in |rows|. Returns true on success.
   bool GetKeywordSearchTermRow(URLID url_id, KeywordSearchTermRow* row);
@@ skipping 80 matching lines @@
 
   // Returns the database for the functions in this interface. The decendent of
   // this class implements these functions to return its objects.
   virtual sql::Connection& GetDB() = 0;
 
  private:
   // True if InitKeywordSearchTermsTable() has been invoked. Not all subclasses
   // have keyword search terms.
   bool has_keyword_search_terms_;
 
+  QueryParser query_parser_;
+
   DISALLOW_COPY_AND_ASSIGN(URLDatabase);
 };
 
 // The fields and order expected by FillURLRow(). ID is guaranteed to be first
 // so that DISTINCT can be prepended to get distinct URLs.
 //
 // This is available BOTH as a macro and a static string (kURLRowFields). Use
 // the macro if you want to put this in the middle of an otherwise constant
 // string, it will save time doing string appends. If you have to build a SQL
 // string dynamically anyway, use the constant, it will save space.
 #define HISTORY_URL_ROW_FIELDS \
     " urls.id, urls.url, urls.title, urls.visit_count, urls.typed_count, " \
     "urls.last_visit_time, urls.hidden "
 
-}  // history
+}  // namespace history
 
 #endif  // CHROME_BROWSER_HISTORY_URL_DATABASE_H_