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

ios/chrome/browser/sessions/session_window.mm

 // Copyright 2012 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/chrome/browser/sessions/session_window.h"
 
 #include <list>
 #include <memory>
 
 #include "base/format_macros.h"
 #include "base/location.h"
 #include "base/logging.h"
 #import "base/mac/scoped_nsobject.h"
 #include "ios/chrome/browser/browser_state/chrome_browser_state.h"
 #import "ios/chrome/browser/sessions/NSCoder+Compatibility.h"
 #import "ios/chrome/browser/sessions/session_service.h"
-#import "ios/web/navigation/crw_session_controller.h"
 #import "ios/web/public/web_thread.h"
-#import "ios/web/web_state/web_state_impl.h"
-
-using web::WebStateImpl;
 
 // Serialization keys.
 NSString* const kSessionsKey = @"sessions";
 NSString* const kSelectedIndexKey = @"selectedIndex";
 
 @interface SessionWindowIOS () {
   // Backing objects for properties of the same name.
   base::scoped_nsobject<NSMutableArray> _sessions;
   NSUInteger _selectedIndex;
 }
@@ skipping 78 matching lines @@
          (!sessionCount && index == NSNotFound);
 }
 
 - (NSString*)description {
   return [NSString stringWithFormat:@"selected index: %" PRIuNS
                                      "\nsessions:\n%@\n",
                                     _selectedIndex, _sessions.get()];
 }
 
 @end