[ios] Move WebStateList to ios/chrome/browser/web_state_list.

ios/chrome/browser/web_state_list/web_state_opener.mm

 // Copyright 2017 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/shared/chrome/browser/tabs/web_state_opener.h"
+#import "ios/chrome/browser/web_state_list/web_state_opener.h"
 
 #include "base/logging.h"
 #import "ios/web/public/navigation_manager.h"
 #import "ios/web/public/web_state/web_state.h"
 
 #if !defined(__has_feature) || !__has_feature(objc_arc)
 #error "This file requires ARC support."
 #endif
 
 namespace {
 int NavigationIndexFromWebState(web::WebState* web_state) {
   if (!web_state)
     return -1;
 
   DCHECK(web_state->GetNavigationManager());
   return web_state->GetNavigationManager()->GetLastCommittedItemIndex();
 }
 }  // namespace
 
 WebStateOpener::WebStateOpener(web::WebState* opener)
     : WebStateOpener(opener, NavigationIndexFromWebState(opener)) {}
 
 WebStateOpener::WebStateOpener(web::WebState* opener, int navigation_index)
     : opener(opener), navigation_index(navigation_index) {}