Hook up Autofill Backend interface to SyncableServices

components/webdata/common/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 "components/webdata/common/web_database.h"
 
 #include <algorithm>
 
 #include "base/stl_util.h"
 #include "content/public/browser/notification_service.h"
@@ skipping 26 matching lines @@
 // |sql::INIT_FAILURE|.
 sql::InitStatus FailedMigrationTo(int version_num) {
   LOG(WARNING) << "Unable to update web database to version "
                << version_num << ".";
   NOTREACHED();
   return sql::INIT_FAILURE;
 }
 
 }  // namespace
 
-WebDatabase::WebDatabase() {}
+WebDatabase::WebDatabase()
+  : weak_ptr_factory_(ALLOW_THIS_IN_INITIALIZER_LIST(this)) {
+
+}
 
 WebDatabase::~WebDatabase() {
+  weak_ptr_factory_.InvalidateWeakPtrs();
 }
 
 void WebDatabase::AddTable(WebDatabaseTable* table) {
   tables_[table->GetTypeKey()] = table;
 }
 
 WebDatabaseTable* WebDatabase::GetTable(WebDatabaseTable::TypeKey key) {
   return tables_[key];
 }
 
 void WebDatabase::BeginTransaction() {
   db_.BeginTransaction();
 }
 
 void WebDatabase::CommitTransaction() {
   db_.CommitTransaction();
 }
 
 sql::Connection* WebDatabase::GetSQLConnection() {
   return &db_;
 }
 
+base::WeakPtr<WebDatabase> WebDatabase::AsWeakPtr() {
+  return weak_ptr_factory_.GetWeakPtr();
+}
+
 sql::InitStatus WebDatabase::Init(const base::FilePath& db_name) {
   // When running in unit tests, there is already a NotificationService object.
   // Since only one can exist at a time per thread, check first.
   if (!content::NotificationService::current())
     notification_service_.reset(content::NotificationService::Create());
 
   db_.set_error_histogram_name("Sqlite.Web.Error");
 
   // We don't store that much data in the tables so use a small page size.
   // This provides a large benefit for empty tables (which is very likely with
@@ skipping 82 matching lines @@
       if (!it->second->MigrateToVersion(next_version,
                                         &update_compatible_version)) {
         return FailedMigrationTo(next_version);
       }
 
       ChangeVersion(&meta_table_, next_version, update_compatible_version);
     }
   }
   return sql::INIT_OK;
 }