[ios clean] Rename removeChildViewController -> detachChildViewController

ios/clean/chrome/browser/ui/tab/tab_container_view_controller.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.
 
 // ======                        New Architecture                         =====
 // =         This code is only used in the new iOS Chrome architecture.       =
 // ============================================================================
 
 #import "ios/clean/chrome/browser/ui/tab/tab_container_view_controller.h"
 
@@ skipping 78 matching lines @@
 
   [NSLayoutConstraint activateConstraints:[self subviewConstraints]];
 }
 
 #pragma mark - Public properties
 
 - (void)setContentViewController:(UIViewController*)contentViewController {
   if (self.contentViewController == contentViewController)
     return;
   if ([self isViewLoaded]) {
-    [self removeChildViewController:self.contentViewController];
+    [self detachChildViewController:self.contentViewController];
     [self addChildViewController:contentViewController
                        toSubview:self.contentView];
   }
   _contentViewController = contentViewController;
 }
 
 - (void)setToolbarViewController:(UIViewController*)toolbarViewController {
   if (self.toolbarViewController == toolbarViewController)
     return;
   if ([self isViewLoaded]) {
-    [self removeChildViewController:self.toolbarViewController];
+    [self detachChildViewController:self.toolbarViewController];
     [self addChildViewController:toolbarViewController
                        toSubview:self.toolbarView];
   }
   _toolbarViewController = toolbarViewController;
 }
 
 - (void)setTabStripViewController:(UIViewController*)tabStripViewController {
   if (self.tabStripViewController == tabStripViewController)
     return;
   if ([self isViewLoaded]) {
-    [self removeChildViewController:self.tabStripViewController];
+    [self detachChildViewController:self.tabStripViewController];
     [self addChildViewController:tabStripViewController
                        toSubview:self.tabStripView];
   }
   _tabStripViewController = tabStripViewController;
 }
 
 #pragma mark - ChildViewController helper methods
 
 - (void)addChildViewController:(UIViewController*)viewController
                      toSubview:(UIView*)subview {
   if (!viewController || !subview) {
     return;
   }
   [self addChildViewController:viewController];
   viewController.view.translatesAutoresizingMaskIntoConstraints = YES;
   viewController.view.autoresizingMask =
       UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
   viewController.view.frame = subview.bounds;
   [subview addSubview:viewController.view];
   [viewController didMoveToParentViewController:self];
 }
 
-- (void)removeChildViewController:(UIViewController*)viewController {
+- (void)detachChildViewController:(UIViewController*)viewController {
   if (viewController.parentViewController != self)
     return;
   [viewController willMoveToParentViewController:nil];
   [viewController.view removeFromSuperview];
   [viewController removeFromParentViewController];
 }
 
 #pragma mark - MenuPresentationDelegate
 
 - (CGRect)frameForMenuPresentation:(UIPresentationController*)presentation {
@@ skipping 142 matching lines @@
         constraintEqualToAnchor:self.view.leadingAnchor],
     [self.toolbarView.trailingAnchor
         constraintEqualToAnchor:self.view.trailingAnchor],
     self.toolbarHeightConstraint,
     [self.toolbarView.bottomAnchor
         constraintEqualToAnchor:self.bottomLayoutGuide.topAnchor],
   ];
 }
 
 @end