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

ios/web/navigation/navigation_manager_impl_unittest.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/navigation/navigation_manager_impl.h"
 
 #include "base/logging.h"
 #import "base/mac/scoped_nsobject.h"
 #import "ios/web/navigation/crw_session_controller+private_constructors.h"
 #import "ios/web/navigation/navigation_manager_delegate.h"
@@ skipping 15 matching lines @@
   WebState* GetWebState() override { return nullptr; }
 };
 }  // namespace
 
 // Test fixture for NavigationManagerImpl testing.
 class NavigationManagerTest : public PlatformTest {
  protected:
   NavigationManagerTest() : manager_(new NavigationManagerImpl()) {
     manager_->SetDelegate(&delegate_);
     manager_->SetBrowserState(&browser_state_);
-    controller_.reset([[CRWSessionController alloc]
-        initWithBrowserState:&browser_state_
-                 openedByDOM:NO]);
+    controller_.reset(
+        [[CRWSessionController alloc] initWithBrowserState:&browser_state_]);
     manager_->SetSessionController(controller_.get());
   }
   CRWSessionController* session_controller() { return controller_.get(); }
   NavigationManagerImpl* navigation_manager() { return manager_.get(); }
 
  private:
   TestBrowserState browser_state_;
   TestNavigationManagerDelegate delegate_;
   std::unique_ptr<NavigationManagerImpl> manager_;
   base::scoped_nsobject<CRWSessionController> controller_;
@@ skipping 543 matching lines @@
       GURL("http://www.3.com"), Referrer(), ui::PAGE_TRANSITION_TYPED,
       web::NavigationInitiationType::USER_INITIATED);
   [session_controller() commitPendingItem];
   web::NavigationItem* item3 = navigation_manager()->GetLastCommittedItem();
 
   // Verify that |item2|'s UserAgentType is propagated to |item3|.
   EXPECT_EQ(item2->GetUserAgentType(), item3->GetUserAgentType());
 }
 
 }  // namespace web