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

ios/chrome/browser/ui/browser_view_controller_unittest.mm

Index: ios/chrome/browser/ui/browser_view_controller_unittest.mm
diff --git a/ios/chrome/browser/ui/browser_view_controller_unittest.mm b/ios/chrome/browser/ui/browser_view_controller_unittest.mm
index 45354be1be2d842ad436d25859b97fe9657a4c9b..afd069364fb0ecdfe6a045ca1153b4aa20c6cdd9 100644
--- a/ios/chrome/browser/ui/browser_view_controller_unittest.mm
+++ b/ios/chrome/browser/ui/browser_view_controller_unittest.mm
@@ -49,7 +49,6 @@
 #include "ios/chrome/test/ios_chrome_scoped_testing_local_state.h"
 #include "ios/chrome/test/testing_application_context.h"
 #import "ios/testing/ocmock_complex_type_helper.h"
-#import "ios/web/navigation/crw_session_controller.h"
 #include "ios/web/public/referrer.h"
 #include "ios/web/public/test/test_web_thread_bundle.h"
 #import "ios/web/public/web_state/ui/crw_native_content_provider.h"
@@ -171,13 +170,11 @@ void SetUp() override {
     [[[currentTab stub] andReturn:dummyView] view];
     [[[currentTab stub] andReturn:webControllerMock] webController];
 
-    id sessionControllerMock =
-        [OCMockObject niceMockForClass:[CRWSessionController class]];
-    webStateImpl_.reset(new WebStateImpl(chrome_browser_state_.get()));
+    web::WebState::CreateParams params(chrome_browser_state_.get());
+    std::unique_ptr<web::WebState> webState = web::WebState::Create(params);
+    webStateImpl_.reset(static_cast<web::WebStateImpl*>(webState.release()));
     [currentTab setWebState:webStateImpl_.get()];
     webStateImpl_->SetWebController(webControllerMock);
-    webStateImpl_->GetNavigationManagerImpl().SetSessionController(
-        sessionControllerMock);
 
     // Set up mock ShareController.
     id shareController =