Converts parts of ios/web to ARC

ios/web/navigation/crw_session_controller.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_CONTROLLER_H_
 #define IOS_WEB_NAVIGATION_CRW_SESSION_CONTROLLER_H_
 
 #import <Foundation/Foundation.h>
 #include <vector>
 
@@ skipping 10 matching lines @@
 struct SSLStatus;
 }
 
 // A CRWSessionController is similar to a NavigationController object in desktop
 // Chrome. It maintains information needed to save/restore a tab with its
 // complete session history. There is one of these for each tab.
 // TODO(stuartmorgan): Move under NavigationManager, and consider merging into
 // NavigationManager.
 @interface CRWSessionController : NSObject<NSCoding, NSCopying>
 
-@property(nonatomic, readonly, retain) NSString* tabId;
+@property(nonatomic, readonly, copy) NSString* tabId;
 @property(nonatomic, readonly, assign) NSInteger currentNavigationIndex;
 @property(nonatomic, readonly, assign) NSInteger previousNavigationIndex;
-@property(nonatomic, readonly, retain) NSArray* entries;
+@property(nonatomic, readonly, strong) NSArray* entries;
 @property(nonatomic, copy) NSString* windowName;
 // Indicates whether the page was opened by DOM (e.g. with |window.open|
 // JavaScript call or by clicking a link with |_blank| target).
 @property(nonatomic, readonly, getter=isOpenedByDOM) BOOL openedByDOM;
-@property(nonatomic, readonly, retain)
+@property(nonatomic, readonly, strong)
     CRWSessionCertificatePolicyManager* sessionCertificatePolicyManager;
 // Returns the current entry in the session list, or the pending entry if there
 // is a navigation in progress.
-@property(nonatomic, readonly) CRWSessionEntry* currentEntry;
+@property(nonatomic, readonly, strong) CRWSessionEntry* currentEntry;
 // Returns the entry that should be displayed to users (e.g., in the omnibox).
-@property(nonatomic, readonly) CRWSessionEntry* visibleEntry;
+@property(nonatomic, readonly, strong) CRWSessionEntry* visibleEntry;
 // Returns the pending entry, if any.
-@property(nonatomic, readonly) CRWSessionEntry* pendingEntry;
+@property(nonatomic, readonly, strong) CRWSessionEntry* pendingEntry;
 // Returns the transient entry, if any.
-@property(nonatomic, readonly) CRWSessionEntry* transientEntry;
+@property(nonatomic, readonly, strong) CRWSessionEntry* transientEntry;
 // Returns the last committed entry.
-@property(nonatomic, readonly) CRWSessionEntry* lastCommittedEntry;
+@property(nonatomic, readonly, strong) CRWSessionEntry* lastCommittedEntry;
 // Returns the previous entry in the session list, or nil if there isn't any.
-@property(nonatomic, readonly) CRWSessionEntry* previousEntry;
+@property(nonatomic, readonly, strong) CRWSessionEntry* previousEntry;
 @property(nonatomic, assign) NSTimeInterval lastVisitedTimestamp;
 @property(nonatomic, readonly, copy) NSString* openerId;
 @property(nonatomic, readonly, assign) NSInteger openerNavigationIndex;
-@property(nonatomic, retain) XCallbackParameters* xCallbackParameters;
+@property(nonatomic, strong) XCallbackParameters* xCallbackParameters;
 
 // CRWSessionController doesn't have public constructors. New
 // CRWSessionControllers are created by deserialization, or via a
 // NavigationManager.
 
 // Sets the corresponding NavigationManager.
 - (void)setNavigationManager:(web::NavigationManagerImpl*)navigationManager;
 
 // Add a new entry with the given url, referrer, and navigation type, making it
 // the current entry. If |url| is the same as the current entry's url, this
@@ skipping 82 matching lines @@
 // |entries_| is empty.
 - (CRWSessionEntry*)lastUserEntry;
 
 // Set |useDesktopUserAgentForNextPendingEntry_| to YES if there is no pending
 // entry, otherwise set |useDesktopUserAgent| in the pending entry.
 - (void)useDesktopUserAgentForNextPendingEntry;
 
 @end
 
 #endif  // IOS_WEB_NAVIGATION_CRW_SESSION_CONTROLLER_H_