Remove the very old code that migrated password data from the WebDataService to PasswordStore.

chrome/browser/webdata/web_database.cc

 // 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.
 
 #include "chrome/browser/webdata/web_database.h"
 
 #include <algorithm>
 
 #include "chrome/browser/diagnostics/sqlite_diagnostics.h"
 #include "chrome/browser/webdata/autofill_table.h"
@@ skipping 113 matching lines @@
   if (!meta_table_.Init(&db_, kCurrentVersionNumber, kCompatibleVersionNumber))
     return sql::INIT_FAILURE;
   if (meta_table_.GetCompatibleVersionNumber() > kCurrentVersionNumber) {
     LOG(WARNING) << "Web database is too new.";
     return sql::INIT_TOO_NEW;
   }
 
   // Create the tables.
   autofill_table_.reset(new AutofillTable(&db_, &meta_table_));
   keyword_table_.reset(new KeywordTable(&db_, &meta_table_));
+  // TODO(mdm): We only really need the LoginsTable on Windows for IE7 password
+  // access, but for now, we still create it on all platforms since it deletes
+  // the old logins table. We can remove this after a while, e.g. in M22 or so.
   logins_table_.reset(new LoginsTable(&db_, &meta_table_));
   token_service_table_.reset(new TokenServiceTable(&db_, &meta_table_));
   web_apps_table_.reset(new WebAppsTable(&db_, &meta_table_));
   web_intents_table_.reset(new WebIntentsTable(&db_, &meta_table_));
 
   // Initialize the tables.
   if (!keyword_table_->Init() || !autofill_table_->Init() ||
       !logins_table_->Init() || !web_apps_table_->Init() ||
       !token_service_table_->Init() || !web_intents_table_->Init() ) {
     LOG(WARNING) << "Unable to initialize the web database.";
@@ skipping 176 matching lines @@
 
     // Add successive versions here.  Each should set the version number and
     // compatible version number as appropriate, then fall through to the next
     // case.
 
     case kCurrentVersionNumber:
       // No migration needed.
       return sql::INIT_OK;
   }
 }