[Clean Skeleton] Migrate code to clean/

ios/chrome/app/steps/tab_grid_coordinator+application_step.mm

Index: ios/chrome/app/steps/tab_grid_coordinator+application_step.mm
diff --git a/ios/chrome/app/steps/tab_grid_coordinator+application_step.mm b/ios/chrome/app/steps/tab_grid_coordinator+application_step.mm
deleted file mode 100644
index 03ff9dac65102dab92c929bd77dc08efa4d20315..0000000000000000000000000000000000000000
--- a/ios/chrome/app/steps/tab_grid_coordinator+application_step.mm
+++ /dev/null
@@ -1,80 +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/tab_grid_coordinator+application_step.h"
-
-#import "base/supports_user_data.h"
-#import "ios/chrome/app/application_state.h"
-#import "ios/chrome/browser/browser_coordinator+internal.h"
-
-#if !defined(__has_feature) || !__has_feature(objc_arc)
-#error "This file requires ARC support."
-#endif
-
-namespace {
-// SupportsUserData storage container for a BrowserCoordinator object, which
-// keeps a strong reference to the object it is initialized with.
-class RootCoordinatorContainer : public base::SupportsUserData::Data {
- public:
-  explicit RootCoordinatorContainer(BrowserCoordinator* coordinator)
-      : coordinator_(coordinator) {}
-
- private:
-  // Mark this variable unused to avoid a compiler warning; the compiler
-  // doesn't have visibility into the ARC-injected retain/release.
-  BrowserCoordinator* __attribute__((unused)) coordinator_;
-};
-
-const char kRootCoordinatorContainerKey[] = "root_coordinator";
-}  // namespace
-
-@interface StopTabGridCoordinator : NSObject<ApplicationStep>
-@end
-
-@implementation TabGridCoordinator (ApplicationStep)
-
-- (BOOL)canRunInState:(ApplicationState*)state {
-  return [state.window isKeyWindow] && state.phase == APPLICATION_FOREGROUNDED;
-}
-
-- (void)runInState:(ApplicationState*)state {
-  self.browserState = state.browserState;
-  [self start];
-
-  state.window.rootViewController = self.viewController;
-
-  // Size the main view controller to fit the whole screen.
-  [self.viewController.view setFrame:state.window.bounds];
-
-  // Tell the application state to use this object to open URLs.
-  state.URLOpener = self;
-
-  // Show the window.
-  state.window.hidden = NO;
-
-  // Make sure this object stays alive.
-  state.persistentState->SetUserData(kRootCoordinatorContainerKey,
-                                     new RootCoordinatorContainer(self));
-
-  // Add a termination step to remove this object.
-  [[state terminationSteps] addObject:[[StopTabGridCoordinator alloc] init]];
-}
-
-@end
-
-@implementation StopTabGridCoordinator
-
-- (BOOL)canRunInState:(ApplicationState*)state {
-  return state.phase = APPLICATION_TERMINATING;
-}
-
-- (void)runInState:(ApplicationState*)state {
-  state.persistentState->RemoveUserData(kRootCoordinatorContainerKey);
-}
-
-@end