Moved serialization out of CRWSessionEntry.

ios/web/navigation/crw_session_entry.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_WEB_NAVIGATION_CRW_SESSION_ENTRY_H_
 #define IOS_WEB_NAVIGATION_CRW_SESSION_ENTRY_H_
 
 #import <Foundation/Foundation.h>
 #include <stdint.h>
 
 #include <memory>
 
 #include "base/strings/string16.h"
 #include "base/time/time.h"
 #include "ui/base/page_transition_types.h"
 #include "url/gurl.h"
 
 namespace web {
 class NavigationItem;
 class NavigationItemImpl;
-
-// Keys used to serialize web::PageScrollState properties.
-extern NSString* const kSessionEntryPageScrollStateKey;
-extern NSString* const kSessionEntryScrollOffsetXKey;
-extern NSString* const kSessionEntryScrollOffsetYKey;
-extern NSString* const kSessionEntryMinimumZoomScaleKey;
-extern NSString* const kSessionEntryMaximumZoomScaleKey;
-extern NSString* const kSessionEntryZoomScaleKey;
-
-// Keys used to serialize navigation properties.
-
-// Current URL (std::string).
-extern NSString* const kSessionEntryURLKey;
-// Current URL. Deprecated, used for backward compatibility (NSURL).
-extern NSString* const kSessionEntryURLDeperecatedKey;
-// Page referrer URL (std::string).
-extern NSString* const kSessionEntryReferrerURLKey;
-// Page referrer URL (NSURL). Deprecated, used for backward compatibility.
-extern NSString* const kSessionEntryReferrerURLDeprecatedKey;
-// Page referrer policy (int).
-extern NSString* const kSessionEntryReferrerPolicyKey;
-// The time at which the last known local navigation has completed (int64_t).
-extern NSString* const kSessionEntryTimestampKey;
-// Page title (NSString).
-extern NSString* const kSessionEntryTitleKey;
-// POST request data (NSData).
-extern NSString* const kSessionEntryPOSTDataKey;
-// HTTP request headers (NSDictionary).
-extern NSString* const kSessionEntryHTTPRequestHeadersKey;
-// Whether or not to bypass showing the resubmit data confirmation when loading
-// a POST request (BOOL).
-extern NSString* const kSessionEntrySkipRepostFormConfirmationKey;
-// Should desktop user agent be used (BOOL)?
-extern NSString* const kSessionEntryUseDesktopUserAgentKey;
 }
 
 // A CRWSessionEntry is similar to a NavigationEntry object in desktop Chrome.
 // It maintains the information needed to save/restore a single entry in session
 // history (i.e., one site) for a tab. A tab may have multiple of these objects
 // comprising its entire session history.
 // DEPRECATED, do not use this class and do not add any methods to it.
 // Use web::NavigationItem instead.
 // TODO(crbug.com/454984): Remove this class.
-@interface CRWSessionEntry : NSObject<NSCoding, NSCopying>
+@interface CRWSessionEntry : NSObject<NSCopying>
 
 // Pointer to the NavigationItem associated with this CRWSessionEntry.
 // Eventually, this will replace CRWSessionEntry entirely.
 @property(nonatomic, readonly) web::NavigationItem* navigationItem;
 
 // Pointer to the NavigationItemImpl associated with this CRWSessionEntry.
 @property(nonatomic, readonly) web::NavigationItemImpl* navigationItemImpl;
 
 // Initialize the session entry with the given NavigationItem.
 - (instancetype)initWithNavigationItem:
     (std::unique_ptr<web::NavigationItem>)item;
 
 @end
 
 #endif  // IOS_WEB_NAVIGATION_CRW_SESSION_ENTRY_H_