Make URLRequestThrottlerEntryInterface inherit RefCountedThreadSafe,

net/url_request/url_request_throttler_entry_interface.h

 // Copyright (c) 2010 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 NET_URL_REQUEST_URL_REQUEST_THROTTLER_ENTRY_INTERFACE_H_
 #define NET_URL_REQUEST_URL_REQUEST_THROTTLER_ENTRY_INTERFACE_H_
 
 #include "base/basictypes.h"
 #include "base/ref_counted.h"
 #include "base/time.h"
 
 namespace net {
 
 class URLRequestThrottlerHeaderInterface;
 
 // Interface provided on entries of the URL request throttler manager.
 class URLRequestThrottlerEntryInterface
-    : public base::RefCounted<URLRequestThrottlerEntryInterface> {
+    : public base::RefCountedThreadSafe<URLRequestThrottlerEntryInterface> {
  public:
   URLRequestThrottlerEntryInterface() {}
 
   // Returns true when we have encountered server errors and are doing
   // exponential back-off.
   // URLRequestHttpJob checks this method prior to every request; it cancels
   // requests if this method returns true.
   virtual bool IsDuringExponentialBackoff() const = 0;
 
   // Calculates a recommended sending time for the next request and reserves it.
@@ skipping 15 matching lines @@
   virtual void UpdateWithResponse(
       const URLRequestThrottlerHeaderInterface* response) = 0;
 
   // Lets higher-level modules, that know how to parse particular response
   // bodies, notify of receiving malformed content for the given URL. This will
   // be handled by the throttler as if an HTTP 5xx response had been received to
   // the request, i.e. it will count as a failure.
   virtual void ReceivedContentWasMalformed() = 0;
 
  protected:
+  friend class base::RefCountedThreadSafe<URLRequestThrottlerEntryInterface>;
   virtual ~URLRequestThrottlerEntryInterface() {}
 
  private:
   friend class base::RefCounted<URLRequestThrottlerEntryInterface>;
   DISALLOW_COPY_AND_ASSIGN(URLRequestThrottlerEntryInterface);
 };
 
 }  // namespace net
 
 #endif  // NET_URL_REQUEST_URL_REQUEST_THROTTLER_ENTRY_INTERFACE_H_