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

ios/chrome/browser/sessions/session_window.h

 // 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.
 
 #ifndef IOS_CHROME_BROWSER_SESSIONS_SESSION_WINDOW_H_
 #define IOS_CHROME_BROWSER_SESSIONS_SESSION_WINDOW_H_
 
 #import <Foundation/Foundation.h>
 
 #include <memory>
 
-#import "ios/web/web_state/web_state_impl.h"
-
 @class CRWSessionStorage;
 
 // Encapsulates everything required to save a session "window". For iOS, there
 // will only be one window at a time.
 @interface SessionWindowIOS : NSObject<NSCoding>
 
 // Adds a serialized session to be written to disk.  SessionWindows are
 // initialized "empty" (without any sessions) and sessions are added one at a
 // time.  For example:
 //  SessionWindowIOS* window = [[SessionWindow alloc] init];
 //  [window addSerializedSessionStorage:session_storage];
 //  ...
 //  [window setSelectedIndex:mySelectedIndex];
 - (void)addSerializedSessionStorage:(CRWSessionStorage*)session;
 
 // Clears all added sessions.
 - (void)clearSessions;
 
 // The serialized session objects.
 @property(nonatomic, readonly) NSArray* sessions;
 
 // The currently selected session. NSNotFound if the sessionWindow contains
 // no sessions; otherwise 0 <= |selectedIndex| < |unclaimedSessions|.
 @property(nonatomic) NSUInteger selectedIndex;
 
 @end
 
 #endif  // IOS_CHROME_BROWSER_SESSIONS_SESSION_WINDOW_H_