Remove ios web shell MainView.xib.

ios/web/shell/view_controller.mm

 // Copyright 2014 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/web/shell/view_controller.h"
 
 #import <MobileCoreServices/MobileCoreServices.h>
 
 #include <stdint.h>
 
@@ skipping 17 matching lines @@
 #include "ui/base/page_transition_types.h"
 
 NSString* const kWebShellBackButtonAccessibilityLabel = @"Back";
 NSString* const kWebShellForwardButtonAccessibilityLabel = @"Forward";
 NSString* const kWebShellAddressFieldAccessibilityLabel = @"Address field";
 
 using web::NavigationManager;
 
 @interface ViewController ()<CRWWebStateDelegate,
                              CRWWebStateObserver,
-                             UITextFieldDelegate> {
+                             UITextFieldDelegate,
+                             UIToolbarDelegate> {
   web::BrowserState* _browserState;
   std::unique_ptr<web::WebState> _webState;
   std::unique_ptr<web::WebStateObserverBridge> _webStateObserver;
   std::unique_ptr<web::WebStateDelegateBridge> _webStateDelegate;
 
   base::mac::ObjCPropertyReleaser _propertyReleaser_ViewController;
 }
 @property(nonatomic, assign, readonly) NavigationManager* navigationManager;
 @property(nonatomic, readwrite, retain) UITextField* field;
 @end
 
 @implementation ViewController
 
 @synthesize field = _field;
 @synthesize containerView = _containerView;
 @synthesize toolbarView = _toolbarView;
 
 - (instancetype)initWithBrowserState:(web::BrowserState*)browserState {
-  self = [super initWithNibName:@"MainView" bundle:nil];
+  self = [super initWithNibName:nil bundle:nil];
   if (self) {
     _propertyReleaser_ViewController.Init(self, [ViewController class]);
     _browserState = browserState;
   }
   return self;
 }
 
 - (void)dealloc {
   net::HTTPProtocolHandlerDelegate::SetInstance(nullptr);
   net::RequestTracker::SetRequestTrackerFactory(nullptr);
   [super dealloc];
 }
 
 - (void)viewDidLoad {
   [super viewDidLoad];
 
+  CGRect bounds = self.view.bounds;
+
+  // Set up the toolbar.
+  _toolbarView = [[UIToolbar alloc] init];
+  _toolbarView.barTintColor =
+      [UIColor colorWithRed:0.337 green:0.467 blue:0.988 alpha:1.0];
+  _toolbarView.frame = CGRectMake(0, 20, CGRectGetWidth(bounds), 44);
+  _toolbarView.autoresizingMask =
+      UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleBottomMargin;
+  _toolbarView.delegate = self;
+  [self.view addSubview:_toolbarView];
+
+  // Set up the container view.
+  _containerView = [[UIView alloc] init];
+  _containerView.frame =
+      CGRectMake(0, 64, CGRectGetWidth(bounds), CGRectGetHeight(bounds) - 64);
+  _containerView.backgroundColor = [UIColor lightGrayColor];
+  _containerView.autoresizingMask =
+      UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
+  [self.view addSubview:_containerView];
+
   // Set up the toolbar buttons.
   UIButton* back = [UIButton buttonWithType:UIButtonTypeCustom];
   [back setImage:[UIImage imageNamed:@"toolbar_back"]
         forState:UIControlStateNormal];
   [back setFrame:CGRectMake(0, 0, 44, 44)];
   [back setImageEdgeInsets:UIEdgeInsetsMake(5, 5, 4, 4)];
   [back setAutoresizingMask:UIViewAutoresizingFlexibleRightMargin];
   [back addTarget:self
                 action:@selector(back)
       forControlEvents:UIControlEventTouchUpInside];
@@ skipping 215 matching lines @@
   [alert addAction:[UIAlertAction actionWithTitle:@"Cancel"
                                             style:UIAlertActionStyleCancel
                                           handler:nil]];
 
   [self presentViewController:alert animated:YES completion:nil];
 
   return YES;
 }
 
 @end