[Clean Skeleton] Migrate code to clean/

ios/chrome/app/steps/launch_to_background.mm

Index: ios/chrome/app/steps/launch_to_background.mm
diff --git a/ios/chrome/app/steps/launch_to_background.mm b/ios/chrome/app/steps/launch_to_background.mm
deleted file mode 100644
index 9a1fed66b26826d9b96a3a2ff02367ec111d274a..0000000000000000000000000000000000000000
--- a/ios/chrome/app/steps/launch_to_background.mm
+++ /dev/null
@@ -1,131 +0,0 @@
-// 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.
-
-// ======                        New Architecture                         =====
-// =         This code is only used in the new iOS Chrome architecture.       =
-// ============================================================================
-
-#import "ios/chrome/app/steps/launch_to_background.h"
-
-#include <memory>
-
-#include "base/mac/bundle_locations.h"
-#include "base/mac/foundation_util.h"
-#include "base/memory/ptr_util.h"
-#include "base/strings/sys_string_conversions.h"
-#include "base/supports_user_data.h"
-#include "ios/chrome/app/application_state.h"
-#include "ios/chrome/app/startup/ios_chrome_main.h"
-#include "ios/chrome/app/startup/register_experimental_settings.h"
-#include "ios/chrome/browser/application_context.h"
-#include "ios/chrome/browser/browser_state/chrome_browser_state_manager.h"
-#include "ios/chrome/browser/web/chrome_web_client.h"
-#include "ios/web/public/web_client.h"
-
-#if !defined(__has_feature) || !__has_feature(objc_arc)
-#error "This file requires ARC support."
-#endif
-
-// Step that removes a previously-stored IOSChromeMain instance.
-@interface StopChromeMain : NSObject<ApplicationStep>
-@end
-
-namespace {
-
-// A SupportsUserData::Data struct to store an IOSChromeMain object and preserve
-// its lifetime (by storing it in an ApplicationState's |state| property) beyond
-// the running time of the -StartChromeMain step.
-class ChromeMainContainer : public base::SupportsUserData::Data {
- public:
-  explicit ChromeMainContainer(std::unique_ptr<IOSChromeMain> chrome_main)
-      : main_(std::move(chrome_main)) {}
-
- private:
-  std::unique_ptr<IOSChromeMain> main_;
-};
-
-// Key for storing the ChromeMainContainer.
-const char kChromeMainKey[] = "chrome_main";
-
-}  // namespace
-
-@implementation SetupBundleAndUserDefaults
-
-- (BOOL)canRunInState:(ApplicationState*)state {
-  return state.phase == APPLICATION_BASIC;
-}
-
-- (void)runInState:(ApplicationState*)state {
-  NSBundle* baseBundle = base::mac::OuterBundle();
-  base::mac::SetBaseBundleID(
-      base::SysNSStringToUTF8([baseBundle bundleIdentifier]).c_str());
-
-  [RegisterExperimentalSettings
-      registerExperimentalSettingsWithUserDefaults:[NSUserDefaults
-                                                       standardUserDefaults]
-                                            bundle:base::mac::
-                                                       FrameworkBundle()];
-}
-
-@end
-
-@implementation StartChromeMain
-
-- (BOOL)canRunInState:(ApplicationState*)state {
-  return state.phase == APPLICATION_BASIC;
-}
-
-- (void)runInState:(ApplicationState*)state {
-  web::SetWebClient(new ChromeWebClient());
-
-  // Create and persist an IOSChromeMain instance.
-  state.persistentState->SetUserData(
-      kChromeMainKey,
-      new ChromeMainContainer(base::MakeUnique<IOSChromeMain>()));
-
-  // Add a step to the termination steps of |state| that will stop and remove
-  // the IOSChromeMain instance.
-  [[state terminationSteps] addObject:[[StopChromeMain alloc] init]];
-
-  state.phase = APPLICATION_BACKGROUNDED;
-}
-
-@end
-
-@implementation StopChromeMain
-
-- (BOOL)canRunInState:(ApplicationState*)state {
-  return state.phase == APPLICATION_TERMINATING;
-}
-
-- (void)runInState:(ApplicationState*)state {
-  // This should be the last step executed while the app is terminating.
-  if (state.terminationSteps.count) {
-    // There are other steps waiting to run, so add this to the end and return.
-    [state.terminationSteps addObject:self];
-    return;
-  }
-  state.persistentState->RemoveUserData(kChromeMainKey);
-}
-
-@end
-
-@implementation SetBrowserState
-
-- (BOOL)canRunInState:(ApplicationState*)state {
-  ApplicationContext* applicationContext = GetApplicationContext();
-  if (!applicationContext)
-    return NO;
-
-  return applicationContext->GetChromeBrowserStateManager() &&
-         state.phase == APPLICATION_BACKGROUNDED;
-}
-
-- (void)runInState:(ApplicationState*)state {
-  state.browserState = GetApplicationContext()
-                           ->GetChromeBrowserStateManager()
-                           ->GetLastUsedBrowserState();
-}
-
-@end