Eliminate the archived history database and clean up related code.

chrome/test/data/History/archived_history.4.sql

Index: chrome/test/data/History/archived_history.4.sql
diff --git a/chrome/test/data/History/history.27.sql b/chrome/test/data/History/archived_history.4.sql
similarity index 52%
copy from chrome/test/data/History/history.27.sql
copy to chrome/test/data/History/archived_history.4.sql
index 0ceb8806444e9a959ddb5abeb373095d87a25dd7..41eb908e149c433e99e773e0782f322bc53142d1 100644
--- a/chrome/test/data/History/history.27.sql
+++ b/chrome/test/data/History/archived_history.4.sql
@@ -1,23 +1,15 @@
 PRAGMA foreign_keys=OFF;
 BEGIN TRANSACTION;
 CREATE TABLE meta(key LONGVARCHAR NOT NULL UNIQUE PRIMARY KEY, value LONGVARCHAR);
-INSERT INTO "meta" VALUES('version','27');
-INSERT INTO "meta" VALUES('last_compatible_version','16');
+INSERT INTO "meta" VALUES('version','4');
+INSERT INTO "meta" VALUES('last_compatible_version','2');
 CREATE TABLE urls(id INTEGER PRIMARY KEY,url LONGVARCHAR,title LONGVARCHAR,visit_count INTEGER DEFAULT 0 NOT NULL,typed_count INTEGER DEFAULT 0 NOT NULL,last_visit_time INTEGER NOT NULL,hidden INTEGER DEFAULT 0 NOT NULL,favicon_id INTEGER DEFAULT 0 NOT NULL);
 CREATE TABLE visits(id INTEGER PRIMARY KEY,url INTEGER NOT NULL,visit_time INTEGER NOT NULL,from_visit INTEGER,transition INTEGER DEFAULT 0 NOT NULL,segment_id INTEGER,visit_duration INTEGER DEFAULT 0 NOT NULL);
 CREATE TABLE visit_source(id INTEGER PRIMARY KEY,source INTEGER NOT NULL);
 CREATE TABLE keyword_search_terms (keyword_id INTEGER NOT NULL,url_id INTEGER NOT NULL,lower_term LONGVARCHAR NOT NULL,term LONGVARCHAR NOT NULL);
-CREATE TABLE downloads (id INTEGER PRIMARY KEY,current_path LONGVARCHAR NOT NULL,target_path LONGVARCHAR NOT NULL,start_time INTEGER NOT NULL,received_bytes INTEGER NOT NULL,total_bytes INTEGER NOT NULL,state INTEGER NOT NULL,danger_type INTEGER NOT NULL, interrupt_reason INTEGER NOT NULL,end_time INTEGER NOT NULL,opened INTEGER NOT NULL,referrer VARCHAR NOT NULL,by_ext_id VARCHAR NOT NULL,by_ext_name VARCHAR NOT NULL);
-CREATE TABLE downloads_url_chains (id INTEGER NOT NULL,chain_index INTEGER NOT NULL,url LONGVARCHAR NOT NULL, PRIMARY KEY (id, chain_index) );
-CREATE TABLE segments (id INTEGER PRIMARY KEY,name VARCHAR,url_id INTEGER NON NULL);
-CREATE TABLE segment_usage (id INTEGER PRIMARY KEY,segment_id INTEGER NOT NULL,time_slot INTEGER NOT NULL,visit_count INTEGER DEFAULT 0 NOT NULL);
 CREATE INDEX visits_url_index ON visits (url);
 CREATE INDEX visits_from_index ON visits (from_visit);
 CREATE INDEX visits_time_index ON visits (visit_time);
-CREATE INDEX segments_name ON segments(name);
-CREATE INDEX segments_url_id ON segments(url_id);
-CREATE INDEX segment_usage_time_slot_segment_id ON segment_usage(time_slot, segment_id);
-CREATE INDEX segments_usage_seg_id ON segment_usage(segment_id);
 CREATE INDEX urls_url_index ON urls (url);
 CREATE INDEX keyword_search_terms_index1 ON keyword_search_terms (keyword_id, lower_term);
 CREATE INDEX keyword_search_terms_index2 ON keyword_search_terms (url_id);