Remove CRWSessionEntry.

ios/web/navigation/navigation_item_impl.h

 // 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.
 
 #ifndef IOS_WEB_NAVIGATION_NAVIGATION_ITEM_IMPL_H_
 #define IOS_WEB_NAVIGATION_NAVIGATION_ITEM_IMPL_H_
 
 #import <Foundation/Foundation.h>
 
 #include <memory>
@@ skipping 56 matching lines @@
   base::Time GetTimestamp() const override;
   void SetUserAgentType(UserAgentType type) override;
   UserAgentType GetUserAgentType() const override;
   bool HasPostData() const override;
   NSDictionary* GetHttpRequestHeaders() const override;
   void AddHttpRequestHeaders(NSDictionary* additional_headers) override;
 
   // Serialized representation of the state object that was used in conjunction
   // with a JavaScript window.history.pushState() or
   // window.history.replaceState() call that created or modified this
-  // CRWSessionEntry. Intended to be used for JavaScript history operations and
+  // NavigationItem. Intended to be used for JavaScript history operations and
   // will be nil in most cases.
   void SetSerializedStateObject(NSString* serialized_state_object);
   NSString* GetSerializedStateObject() const;
 
   // Whether or not this item was created by calling history.pushState().
   void SetIsCreatedFromPushState(bool push_state);
   bool IsCreatedFromPushState() const;
 
   // Whether the state for this navigation has been changed by
   // history.replaceState().
@@ skipping 80 matching lines @@
 
   // Weak pointer to the facade delegate.
   std::unique_ptr<NavigationItemFacadeDelegate> facade_delegate_;
 
   // Copy and assignment is explicitly allowed for this class.
 };
 
 }  // namespace web
 
 #endif  // IOS_WEB_NAVIGATION_NAVIGATION_ITEM_IMPL_H_