Pass Callback to TaskRunner by value and consume it on invocation (1)

ios/chrome/app/application_delegate/app_state.mm

 // Copyright 2016 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.
 
 #import "ios/chrome/app/application_delegate/app_state.h"
 
+#include <utility>
+
+#include "base/callback.h"
 #include "base/critical_closure.h"
 #import "base/mac/bind_objc_block.h"
 #include "base/metrics/histogram_macros.h"
 #include "components/metrics/metrics_service.h"
-#import "ios/chrome/app/main_application_delegate.h"
 #import "ios/chrome/app/application_delegate/app_navigation.h"
 #import "ios/chrome/app/application_delegate/browser_launcher.h"
 #import "ios/chrome/app/application_delegate/memory_warning_helper.h"
 #import "ios/chrome/app/application_delegate/metrics_mediator.h"
 #import "ios/chrome/app/application_delegate/startup_information.h"
 #import "ios/chrome/app/application_delegate/tab_opening.h"
 #import "ios/chrome/app/application_delegate/tab_switching.h"
 #import "ios/chrome/app/application_delegate/user_activity_handler.h"
 #import "ios/chrome/app/deferred_initialization_runner.h"
+#import "ios/chrome/app/main_application_delegate.h"
 #import "ios/chrome/app/safe_mode/safe_mode_coordinator.h"
 #import "ios/chrome/app/safe_mode_crashing_modules_config.h"
 #include "ios/chrome/browser/application_context.h"
 #include "ios/chrome/browser/browser_state/chrome_browser_state.h"
 #include "ios/chrome/browser/chrome_constants.h"
 #include "ios/chrome/browser/crash_loop_detection_util.h"
 #include "ios/chrome/browser/crash_report/breakpad_helper.h"
 #import "ios/chrome/browser/crash_report/crash_report_background_uploader.h"
 #import "ios/chrome/browser/device_sharing/device_sharing_manager.h"
 #import "ios/chrome/browser/geolocation/omnibox_geolocation_config.h"
 #import "ios/chrome/browser/metrics/previous_session_info.h"
 #import "ios/chrome/browser/ui/authentication/signed_in_accounts_view_controller.h"
 #include "ios/chrome/browser/ui/background_generator.h"
 #import "ios/chrome/browser/ui/browser_view_controller.h"
 #import "ios/chrome/browser/ui/main/browser_view_information.h"
 #include "ios/net/cookies/cookie_store_ios.h"
 #include "ios/net/cookies/system_cookie_util.h"
 #include "ios/public/provider/chrome/browser/chrome_browser_provider.h"
 #include "ios/public/provider/chrome/browser/distribution/app_distribution_provider.h"
 #import "ios/public/provider/chrome/browser/user_feedback/user_feedback_provider.h"
 #include "ios/web/net/request_tracker_impl.h"
 #include "net/url_request/url_request_context.h"
 
 #if !defined(__has_feature) || !__has_feature(objc_arc)
 #error "This file requires ARC support."
 #endif
 
 namespace {
 // Helper method to post |closure| on the UI thread.
-void PostTaskOnUIThread(const base::Closure& closure) {
-  web::WebThread::PostTask(web::WebThread::UI, FROM_HERE, closure);
+void PostTaskOnUIThread(base::Closure closure) {
+  web::WebThread::PostTask(web::WebThread::UI, FROM_HERE, std::move(closure));
 }
 NSString* const kStartupAttemptReset = @"StartupAttempReset";
 }  // namespace
 
 @interface AppState ()<SafeModeCoordinatorDelegate> {
   // Container for startup information.
   __weak id<StartupInformation> _startupInformation;
   // Browser launcher to launch browser in different states.
   __weak id<BrowserLauncher> _browserLauncher;
   // UIApplicationDelegate for the application.
@@ skipping 435 matching lines @@
   self = [self initWithBrowserLauncher:browserLauncher
                     startupInformation:startupInformation
                    applicationDelegate:applicationDelegate];
   if (self) {
     _shouldOpenNTPTabOnActive = shouldOpenNTP;
   }
   return self;
 }
 
 @end