Replace prefix of ios/web_view C++ classes.

ios/web_view/internal/criwv_web_main_delegate.h

-// 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.
-
-#ifndef IOS_WEB_VIEW_INTERNAL_CRIWV_WEB_MAIN_DELEGATE_H_
-#define IOS_WEB_VIEW_INTERNAL_CRIWV_WEB_MAIN_DELEGATE_H_
-
-#include <memory>
-#include "base/macros.h"
-#include "ios/web/public/app/web_main_delegate.h"
-
-@protocol CWVDelegate;
-
-namespace ios_web_view {
-class CRIWVWebClient;
-
-// CWV-specific implementation of WebMainDelegate.
-class CRIWVWebMainDelegate : public web::WebMainDelegate {
- public:
-  explicit CRIWVWebMainDelegate(id<CWVDelegate> delegate);
-  ~CRIWVWebMainDelegate() override;
-
-  // WebMainDelegate implementation.
-  void BasicStartupComplete() override;
-
- private:
-  // This object's delegate.
-  __weak id<CWVDelegate> delegate_;
-
-  // The content and web clients registered by this object.
-  std::unique_ptr<CRIWVWebClient> web_client_;
-
-  DISALLOW_COPY_AND_ASSIGN(CRIWVWebMainDelegate);
-};
-
-}  // namespace ios_web_view
-
-#endif  // IOS_WEB_VIEW_INTERNAL_CRIWV_WEB_MAIN_DELEGATE_H_