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

ios/web/navigation/crw_session_storage_unittest.mm

Index: ios/web/navigation/crw_session_storage_unittest.mm
diff --git a/ios/web/navigation/crw_session_storage_unittest.mm b/ios/web/navigation/crw_session_storage_unittest.mm
index bcf3fd4c2aad077f5756f8bf2d797bb7f65636b0..ab17ff766631756073efe1210330dc09c10c9ac4 100644
--- a/ios/web/navigation/crw_session_storage_unittest.mm
+++ b/ios/web/navigation/crw_session_storage_unittest.mm
@@ -48,7 +48,7 @@ BOOL SessionStoragesAreEqual(CRWSessionStorage* session1,
   NSArray* items1 = session1.itemStorages;
   NSArray* items2 = session2.itemStorages;
   return ItemStorageListsAreEqual(items1, items2) &&
-         session1.openedByDOM == session2.openedByDOM &&
+         session1.hasOpener == session2.hasOpener &&
          session1.currentNavigationIndex == session2.currentNavigationIndex &&
          session1.previousNavigationIndex == session2.previousNavigationIndex &&
          UserDataAreEqual(session1.userData, session2.userData);
@@ -60,7 +60,7 @@ BOOL SessionStoragesAreEqual(CRWSessionStorage* session1,
   CRWNSessionStorageTest()
       : session_storage_([[CRWSessionStorage alloc] init]) {
     // Set up |session_storage_|.
-    [session_storage_ setOpenedByDOM:YES];
+    [session_storage_ setHasOpener:YES];
     [session_storage_ setCurrentNavigationIndex:4];
     [session_storage_ setPreviousNavigationIndex:3];
     // Create an item storage.