Update web shell app to not load dev.chromium.org on launch.

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 118 matching lines @@
   _webState->SetWebUsageEnabled(true);
 
   _webStateObserver.reset(
       new web::WebStateObserverBridge(_webState.get(), self));
   _webStateDelegate.reset(new web::WebStateDelegateBridge(self));
   _webState->SetDelegate(_webStateDelegate.get());
 
   UIView* view = _webState->GetView();
   [view setFrame:[_containerView bounds]];
   [_containerView addSubview:view];
-
-  NavigationManager::WebLoadParams params(GURL("https://dev.chromium.org/"));
-  params.transition_type = ui::PAGE_TRANSITION_TYPED;
-  self.navigationManager->LoadURLWithParams(params);
 }
 
 - (NavigationManager*)navigationManager {
   return _webState->GetNavigationManager();
 }
 
 - (web::WebState*)webState {
   return _webState.get();
 }
 
@@ skipping 149 matching lines @@
   [alert addAction:[UIAlertAction actionWithTitle:@"Cancel"
                                             style:UIAlertActionStyleCancel
                                           handler:nil]];
 
   [self presentViewController:alert animated:YES completion:nil];
 
   return YES;
 }
 
 @end