Cleanup ios/web_view.

ios/web_view/internal/criwv_web_main_delegate.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_view/internal/criwv_web_main_delegate.h"
+
+#include "base/memory/ptr_util.h"
+#import "ios/web_view/internal/criwv_web_client.h"
+#import "ios/web_view/public/criwv_delegate.h"
+
+namespace ios_web_view {
+
+CRIWVWebMainDelegate::CRIWVWebMainDelegate(id<CRIWVDelegate> delegate)
+    : delegate_(delegate) {}
+
+CRIWVWebMainDelegate::~CRIWVWebMainDelegate() {}
+
+void CRIWVWebMainDelegate::BasicStartupComplete() {
+  web_client_ = base::MakeUnique<CRIWVWebClient>(delegate_);
+  web::SetWebClient(web_client_.get());
+}
+
+}  // namespace ios_web_view