Remove CRWSessionController usage from BrowserViewController.

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..029f18155e5f1d22a41e8d1c135c3069e00d8782 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()));
     [currentTab setWebState:webStateImpl_.get()];
     webStateImpl_->SetWebController(webControllerMock);
-    webStateImpl_->GetNavigationManagerImpl().SetSessionController(
-        sessionControllerMock);
+    webStateImpl_->GetNavigationManagerImpl().InitializeSession(
+        NO /*opened_by_dom*/);
 
     // Set up mock ShareController.
     id shareController =