Cleanup ios/web_view.

ios/web_view/internal/criwv_web_client.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_client.h"
+
+#include "base/strings/sys_string_conversions.h"
+#include "ios/web/public/user_agent.h"
+#include "ios/web_view/internal/criwv_browser_state.h"
+#import "ios/web_view/internal/criwv_web_main_parts.h"
+#import "ios/web_view/public/criwv_delegate.h"
+
+namespace ios_web_view {
+
+CRIWVWebClient::CRIWVWebClient(id<CRIWVDelegate> delegate)
+    : delegate_(delegate), web_main_parts_(nullptr) {}
+
+CRIWVWebClient::~CRIWVWebClient() {}
+
+web::WebMainParts* CRIWVWebClient::CreateWebMainParts() {
+  web_main_parts_ = new CRIWVWebMainParts(delegate_);
+  return web_main_parts_;
+}
+
+CRIWVBrowserState* CRIWVWebClient::browser_state() const {
+  return web_main_parts_->browser_state();
+}
+
+std::string CRIWVWebClient::GetProduct() const {
+  return base::SysNSStringToUTF8([delegate_ partialUserAgent]);
+}
+
+std::string CRIWVWebClient::GetUserAgent(bool desktop_user_agent) const {
+  std::string product = GetProduct();
+  return web::BuildUserAgentFromProduct(product);
+}
+
+}  // namespace ios_web_view