Moved |openedByDOM| to WebState's CreateParams and public interface.

ios/web/public/test/web_test_with_web_state.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.
 
 #import "ios/web/public/test/web_test_with_web_state.h"
 
 #include "base/run_loop.h"
 #include "base/strings/sys_string_conversions.h"
 #import "base/test/ios/wait_util.h"
 #include "ios/web/public/web_state/url_verification_constants.h"
@@ skipping 11 matching lines @@
 }  // namespace
 
 namespace web {
 
 WebTestWithWebState::WebTestWithWebState() {}
 
 WebTestWithWebState::~WebTestWithWebState() {}
 
 void WebTestWithWebState::SetUp() {
   WebTest::SetUp();
-  std::unique_ptr<WebStateImpl> web_state(new WebStateImpl(GetBrowserState()));
-  web_state->GetNavigationManagerImpl().InitializeSession(NO);
-  web_state->SetWebUsageEnabled(true);
-  web_state_.reset(web_state.release());
+  web::WebState::CreateParams params(GetBrowserState());
+  web_state_ = web::WebState::Create(params);
+  web_state_->SetWebUsageEnabled(true);
 
   // Force generation of child views; necessary for some tests.
-  [GetWebController(web_state_.get()) triggerPendingLoad];
+  [GetWebController(web_state()) triggerPendingLoad];
 }
 
 void WebTestWithWebState::TearDown() {
   DestroyWebState();
   WebTest::TearDown();
 }
 
 void WebTestWithWebState::LoadHtml(NSString* html, const GURL& url) {
   // Sets MIME type to "text/html" once navigation is committed.
   class MimeTypeUpdater : public WebStateObserver {
@@ skipping 102 matching lines @@
 
 void WebTestWithWebState::WillProcessTask(const base::PendingTask&) {
   // Nothing to do.
 }
 
 void WebTestWithWebState::DidProcessTask(const base::PendingTask&) {
   processed_a_task_ = true;
 }
 
 }  // namespace web