Upstream Chrome on iOS source code [10/11].

ios/chrome/browser/ui/web_contents/web_contents_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/chrome/browser/ui/web_contents/web_contents_view_controller.h"
+
+#import "ios/web/public/navigation_manager.h"
+#include "ios/web/public/web_state/web_state.h"
+#include "ui/base/page_transition_types.h"
+#include "url/gurl.h"
+
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
+@implementation WebContentsViewController
+
+@synthesize webState = _webState;
+
+- (instancetype)initWithWebState:(web::WebState*)webState {
+  if ((self = [super initWithNibName:nil bundle:nil])) {
+    DCHECK(webState);
+    _webState = webState;
+  }
+  return self;
+}
+
+- (void)viewDidLoad {
+  self.view.backgroundColor = [UIColor colorWithWhite:0.75 alpha:1.0];
+
+  UIView* webContentsView = self.webState->GetView();
+  webContentsView.translatesAutoresizingMaskIntoConstraints = NO;
+  [self.view addSubview:webContentsView];
+  [NSLayoutConstraint activateConstraints:@[
+    [webContentsView.topAnchor constraintEqualToAnchor:self.view.topAnchor],
+    [webContentsView.bottomAnchor
+        constraintEqualToAnchor:self.view.bottomAnchor],
+    [webContentsView.leadingAnchor
+        constraintEqualToAnchor:self.view.leadingAnchor],
+    [webContentsView.trailingAnchor
+        constraintEqualToAnchor:self.view.trailingAnchor],
+  ]];
+
+  if (!self.webState->GetNavigationManager()->GetItemCount()) {
+    web::NavigationManager::WebLoadParams params(
+        GURL("https://dev.chromium.org/"));
+    params.transition_type = ui::PAGE_TRANSITION_TYPED;
+    _webState->GetNavigationManager()->LoadURLWithParams(params);
+  }
+}
+
+@end