Merge CWVWebsiteDataStore into CWVWebViewConfiguration.

ios/web_view/internal/cwv_website_data_store.mm

-// Copyright 2017 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/cwv_website_data_store_internal.h"
-
-#include <memory.h>
-
-#include "ios/web_view/internal/web_view_browser_state.h"
-#import "ios/web_view/internal/web_view_web_client.h"
-
-#if !defined(__has_feature) || !__has_feature(objc_arc)
-#error "This file requires ARC support."
-#endif
-
-@implementation CWVWebsiteDataStore {
-  // TODO(crbug.com/690182): CWVWebsiteDataStore should own _browserState.
-  ios_web_view::WebViewBrowserState* _browserState;
-}
-
-- (BOOL)isPersistent {
-  return !_browserState->IsOffTheRecord();
-}
-
-- (ios_web_view::WebViewBrowserState*)browserState {
-  return _browserState;
-}
-
-- (void)setBrowserState:
-    (ios_web_view::WebViewBrowserState* _Nonnull)browserState {
-  _browserState = browserState;
-}
-
-+ (instancetype)defaultDataStore {
-  CWVWebsiteDataStore* dataStore = [[CWVWebsiteDataStore alloc] init];
-
-  ios_web_view::WebViewWebClient* client =
-      static_cast<ios_web_view::WebViewWebClient*>(web::GetWebClient());
-  [dataStore setBrowserState:client->browser_state()];
-
-  return dataStore;
-}
-
-+ (instancetype)nonPersistentDataStore {
-  CWVWebsiteDataStore* dataStore = [[CWVWebsiteDataStore alloc] init];
-
-  ios_web_view::WebViewWebClient* client =
-      static_cast<ios_web_view::WebViewWebClient*>(web::GetWebClient());
-  [dataStore setBrowserState:client->off_the_record_browser_state()];
-
-  return dataStore;
-}
-
-@end