Persist download interrupt reason, both target and current paths, and url_chain.

chrome/test/data/History/history.21.sql

 BEGIN TRANSACTION;
+-- Version reset
 CREATE TABLE meta(key LONGVARCHAR NOT NULL UNIQUE PRIMARY KEY,value LONGVARCHAR);
 INSERT INTO "meta" VALUES('version','21');
 INSERT INTO "meta" VALUES('last_compatible_version','16');
+
+-- Create old androi_urls table
 CREATE TABLE android_urls(id INTEGER PRIMARY KEY, raw_url LONGVARCHAR, created_time INTEGER NOT NULL, last_visit_time INTEGER NOT NULL, url_id INTEGER NOT NULL,favicon_id INTEGER DEFAULT NULL, bookmark INTEGER DEFAULT 0);
 CREATE INDEX android_urls_raw_url_idx ON android_urls(raw_url);
 CREATE INDEX android_urls_url_id_idx ON android_urls(url_id);
 INSERT INTO "android_urls" VALUES(1,'http://google.com/',1,1,1,1,0);
 INSERT INTO "android_urls" VALUES(4,'www.google.com/',1,1,3,1,1);
+
+-- Create downloads table in proper (old) format.
+CREATE TABLE downloads (
+    id INTEGER PRIMARY KEY,
+    full_path LONGVARCHAR NOT NULL,
+    url LONGVARCHAR NOT NULL,
+    start_time INTEGER NOT NULL,
+    received_bytes INTEGER NOT NULL,
+    total_bytes INTEGER NOT NULL,
+    state INTEGER NOT NULL,
+    end_time INTEGER NOT NULL,
+    opened INTEGER NOT NULL);
+
 COMMIT;