[ios] RootCoordinator and view controller.

ios/clean/chrome/app/steps/tab_grid_coordinator+application_step.h

Index: ios/clean/chrome/app/steps/tab_grid_coordinator+application_step.h
diff --git a/ios/clean/chrome/app/steps/tab_grid_coordinator+application_step.h b/ios/clean/chrome/app/steps/tab_grid_coordinator+application_step.h
deleted file mode 100644
index 341bb37f261a8fd30a36a058b1e81ab798f13794..0000000000000000000000000000000000000000
--- a/ios/clean/chrome/app/steps/tab_grid_coordinator+application_step.h
+++ /dev/null
@@ -1,23 +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.
-
-#ifndef IOS_CLEAN_CHROME_APP_STEPS_TAB_GRID_COORDINATOR_APPLICATION_STEP_H_
-#define IOS_CLEAN_CHROME_APP_STEPS_TAB_GRID_COORDINATOR_APPLICATION_STEP_H_
-
-#import <UIKit/UIKit.h>
-
-#import "ios/clean/chrome/app/application_step.h"
-#import "ios/clean/chrome/browser/ui/tab_grid/tab_grid_coordinator.h"
-
-// Category on TabGridCoordinator to allow it to act as an application step
-// and control the root UI for the application when is starts.
-// Creates the main window and makes it key, but doesn't make it visible yet.
-//  Pre:  Application phase is APPLICATION_FOREGROUNDED and the main window is
-//        key.
-//  Post: Application phase is (still) APPLICATION_FOREGROUNDED, the main window
-//        is visible and has a root view controller set.
-@interface TabGridCoordinator (ApplicationStep)<ApplicationStep>
-@end
-
-#endif  // IOS_CLEAN_CHROME_APP_STEPS_TAB_GRID_COORDINATOR_APPLICATION_STEP_H_