IndexedDB: Revert change to enable reuse of leveldb manifest in IDB.

The developer channel was showing spikes in %error when opening a leveldb. These
spikes were between 0-10x the normal rates of errors.

This change is a manual revert of #308493 (ddd0184).

BUG=402980,395799

Review URL: https://codereview.chromium.org/841753003

Cr-Commit-Position: refs/heads/master@{#310338}

content/browser/indexed_db/leveldb/leveldb_database.cc

@@ -103,7 +103,7 @@ static leveldb::Status OpenDB(
   options.create_if_missing = true;
   options.paranoid_checks = true;
   options.filter_policy = filter_policy->get();
-  options.reuse_logs = true;
+  options.reuse_logs = false;
   options.compression = leveldb::kSnappyCompression;
 
   // For info about the troubles we've run into with this parameter, see: