Upstream most of ios/web/net

ios/net/request_tracker.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_NET_REQUEST_TRACKER_H_
 #define IOS_NET_REQUEST_TRACKER_H_
 
 #import <Foundation/Foundation.h>
 
 #include "base/callback_forward.h"
@@ skipping 26 matching lines @@
     CACHE_RELOAD,
     CACHE_HISTORY,
     CACHE_BYPASS,
     CACHE_ONLY,
   };
 
   typedef base::Callback<void(bool)> SSLCallback;
 
   class RequestTrackerFactory {
    public:
+    virtual ~RequestTrackerFactory();
+
     // Returns false if |request| is associated to an invalid tracker and should
     // be cancelled. In this case |tracker| is set to nullptr.
     // Returns true if |request| is associated with a valid tracker or if the
     // request is not associated to any tracker.
     virtual bool GetRequestTracker(NSURLRequest* request,
                                    base::WeakPtr<RequestTracker>* tracker) = 0;
   };
 
   // Sets the RequestTrackerFactory. The factory has to be set before the
   // GetRequestTracker() function can be called.
@@ skipping 106 matching lines @@
   bool initialized_;
   CacheMode cache_mode_;
   base::ThreadChecker thread_checker_;
 
   base::WeakPtrFactory<RequestTracker> weak_ptr_factory_;
 };
 
 }  // namespace net
 
 #endif  // IOS_NET_REQUEST_TRACKER_H_