Created web::UserAgentType.

ios/web/public/crw_navigation_item_storage.h

 // 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.
 
 #ifndef IOS_WEB_PUBLIC_CRW_NAVIGATION_ITEM_STORAGE_H_
 #define IOS_WEB_PUBLIC_CRW_NAVIGATION_ITEM_STORAGE_H_
 
 #import <Foundation/Foundation.h>
 #include <stddef.h>
 
 #include "base/strings/string16.h"
 #include "base/time/time.h"
 #include "ios/web/public/referrer.h"
+#include "ios/web/public/user_agent.h"
 #import "ios/web/public/web_state/page_display_state.h"
 #include "url/gurl.h"
 
 namespace web {
 
 // Keys used to serialize navigation properties.
 
 // Current URL (std::string).
 extern NSString* const kNavigationItemStorageURLKey;
 // Current URL. Deprecated, used for backward compatibility (NSURL).
 extern NSString* const kNavigationItemStorageURLDeperecatedKey;
 // Page referrer URL (std::string).
 extern NSString* const kNavigationItemStorageReferrerURLKey;
 // Page referrer URL (NSURL). Deprecated, used for backward compatibility.
+// TODO(crbug.com/696125): Remove this key.
 extern NSString* const kNavigationItemStorageReferrerURLDeprecatedKey;
 // Page referrer policy (int).
 extern NSString* const kNavigationItemStorageReferrerPolicyKey;
 // The time at which the last known local navigation has completed (int64_t).
 extern NSString* const kNavigationItemStorageTimestampKey;
 // Page title (NSString).
 extern NSString* const kNavigationItemStorageTitleKey;
 // The PageDisplayState (NSDictionary).
 extern NSString* const kNavigationItemStoragePageDisplayStateKey;
 // POST request data (NSData).
 extern NSString* const kNavigationItemStoragePOSTDataKey;
 // HTTP request headers (NSDictionary).
 extern NSString* const kNavigationItemStorageHTTPRequestHeadersKey;
 // Whether or not to bypass showing the resubmit data confirmation when loading
 // a POST request (BOOL).
 extern NSString* const kNavigationItemStorageSkipRepostFormConfirmationKey;
-// Should desktop user agent be used (BOOL)?
-extern NSString* const kNavigationItemStorageUseDesktopUserAgentKey;
+// The user agent type (std::string).
+extern NSString* const kNavigationItemStorageUserAgentTypeKey;
+// Should desktop user agent be used (BOOL).  Deprecated, used for backward
+// compatibility.
+// TODO(crbug.com/696125): remove this key.
+extern NSString* const kNavigationItemStorageUseDesktopUserAgentDeprecatedKey;
 
 }  // namespace web
 
 // NSCoding-compliant class used to serialize NavigationItem's persisted
 // properties.
 @interface CRWNavigationItemStorage : NSObject<NSCoding>
 
 @property(nonatomic, assign) GURL virtualURL;
 @property(nonatomic, assign) web::Referrer referrer;
 @property(nonatomic, assign) base::Time timestamp;
 @property(nonatomic, assign) base::string16 title;
 @property(nonatomic, assign) web::PageDisplayState displayState;
 @property(nonatomic, assign) BOOL shouldSkipRepostFormConfirmation;
-@property(nonatomic, assign, getter=isOverridingUserAgent)
-    BOOL overridingUserAgent;
+@property(nonatomic, assign) web::UserAgentType userAgentType;
 @property(nonatomic, copy) NSData* POSTData;
 @property(nonatomic, copy) NSDictionary* HTTPRequestHeaders;
 
 @end
 
 #endif  // IOS_WEB_PUBLIC_CRW_NAVIGATION_ITEM_STORAGE_H_