Convert //components/[u-z]* from scoped_ptr to std::unique_ptr

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 <utility>
 
 #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::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) {
+void WebDatabaseBackend::AddTable(std::unique_ptr<WebDatabaseTable> table) {
   DCHECK(!db_.get());
   tables_.push_back(table.release());
 }
 
 void WebDatabaseBackend::InitDatabase() {
   LoadDatabaseIfNecessary();
   if (delegate_) {
     delegate_->DBLoaded(init_status_);
   }
 }
@@ skipping 24 matching lines @@
 void WebDatabaseBackend::ShutdownDatabase() {
   if (db_ && init_status_ == sql::INIT_OK)
     db_->CommitTransaction();
   db_.reset(NULL);
   init_complete_ = true;  // Ensures the init sequence is not re-run.
   init_status_ = sql::INIT_FAILURE;
 }
 
 void WebDatabaseBackend::DBWriteTaskWrapper(
     const WebDatabaseService::WriteTask& task,
-    scoped_ptr<WebDataRequest> request) {
+    std::unique_ptr<WebDataRequest> request) {
   if (request->IsCancelled())
     return;
 
   ExecuteWriteTask(task);
   request_manager_->RequestCompleted(std::move(request));
 }
 
 void WebDatabaseBackend::ExecuteWriteTask(
     const WebDatabaseService::WriteTask& task) {
   LoadDatabaseIfNecessary();
   if (db_ && init_status_ == sql::INIT_OK) {
     WebDatabase::State state = task.Run(db_.get());
     if (state == WebDatabase::COMMIT_NEEDED)
       Commit();
   }
 }
 
 void WebDatabaseBackend::DBReadTaskWrapper(
     const WebDatabaseService::ReadTask& task,
-    scoped_ptr<WebDataRequest> request) {
+    std::unique_ptr<WebDataRequest> request) {
   if (request->IsCancelled())
     return;
 
   request->SetResult(ExecuteReadTask(task));
   request_manager_->RequestCompleted(std::move(request));
 }
 
-scoped_ptr<WDTypedResult> WebDatabaseBackend::ExecuteReadTask(
+std::unique_ptr<WDTypedResult> WebDatabaseBackend::ExecuteReadTask(
     const WebDatabaseService::ReadTask& task) {
   LoadDatabaseIfNecessary();
   if (db_ && init_status_ == sql::INIT_OK) {
     return task.Run(db_.get());
   }
-  return scoped_ptr<WDTypedResult>();
+  return nullptr;
 }
 
 WebDatabaseBackend::~WebDatabaseBackend() {
   ShutdownDatabase();
 }
 
 void WebDatabaseBackend::Commit() {
   DCHECK(db_);
   DCHECK_EQ(sql::INIT_OK, init_status_);
   db_->CommitTransaction();
   db_->BeginTransaction();
 }