components: Remove use of MessageLoopProxy and deprecated MessageLoop APIs

components/webdata/common/web_database_backend.cc

 // Copyright 2013 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_backend.h"
 
 #include "base/bind.h"
 #include "base/location.h"
 #include "components/webdata/common/web_data_request_manager.h"
 #include "components/webdata/common/web_database.h"
 #include "components/webdata/common/web_database_table.h"
 
 using base::Bind;
 using base::FilePath;
 
 WebDatabaseBackend::WebDatabaseBackend(
     const FilePath& path,
     Delegate* delegate,
-    const scoped_refptr<base::MessageLoopProxy>& db_thread)
+    const scoped_refptr<base::SingleThreadTaskRunner>& db_thread)
     : base::RefCountedDeleteOnMessageLoop<WebDatabaseBackend>(db_thread),
       db_path_(path),
       request_manager_(new WebDataRequestManager()),
       init_status_(sql::INIT_FAILURE),
       init_complete_(false),
       delegate_(delegate) {
 }
 
 void WebDatabaseBackend::AddTable(scoped_ptr<WebDatabaseTable> table) {
   DCHECK(!db_.get());
@@ skipping 80 matching lines @@
 WebDatabaseBackend::~WebDatabaseBackend() {
   ShutdownDatabase();
 }
 
 void WebDatabaseBackend::Commit() {
   DCHECK(db_);
   DCHECK_EQ(sql::INIT_OK, init_status_);
   db_->CommitTransaction();
   db_->BeginTransaction();
 }