Remove some calls to URLRequestContext::network_delegate().

net/url_request/url_request.h

 // Copyright (c) 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 NET_URL_REQUEST_URL_REQUEST_H_
 #define NET_URL_REQUEST_URL_REQUEST_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 513 matching lines @@
   // Returns true if the request is in the process of redirecting to a new
   // URL but has not yet initiated the new request.
   bool is_redirecting() const { return is_redirecting_; }
 
   // Returns the error status of the request.
   const URLRequestStatus& status() const { return status_; }
 
   // Returns a globally unique identifier for this request.
   uint64 identifier() const { return identifier_; }
 
+  // Returns true if the request has a network delegate that can throttle the
+  // request.  If the request has no network delegate, it will also return true.
+  bool CanThrottle() const;
+
   // This method is called to start the request.  The delegate will receive
   // a OnResponseStarted callback when the request is started.
   void Start();
 
   // This method may be called at any time after Start() has been called to
   // cancel the request.  This method may be called many times, and it has
   // no effect once the response has completed.  It is guaranteed that no
   // methods of the delegate will be called after the request has been
   // cancelled, except that this may call the delegate's OnReadCompleted()
   // during the call to Cancel itself.
@@ skipping 57 matching lines @@
   void ContinueWithCertificate(X509Certificate* client_cert);
 
   // This method can be called after some error notifications to instruct this
   // URLRequest to ignore the current error and continue with the request.  To
   // cancel the request instead, call Cancel().
   void ContinueDespiteLastError();
 
   // Used to specify the context (cookie store, cache) for this request.
   const URLRequestContext* context() const;
 
+  // Used to access the network delegate for this request.
+  NetworkDelegate* network_delegate() const;
+
   const BoundNetLog& net_log() const { return net_log_; }
 
   // Returns the expected content size if available
   int64 GetExpectedContentSize() const;
 
   // Returns the priority level for this request.
   RequestPriority priority() const { return priority_; }
   void set_priority(RequestPriority priority) {
     DCHECK_GE(priority, MINIMUM_PRIORITY);
     DCHECK_LT(priority, NUM_PRIORITIES);
@@ skipping 219 matching lines @@
   LoadTimingInfo load_timing_info_;
 
   scoped_ptr<const base::debug::StackTrace> stack_trace_;
 
   DISALLOW_COPY_AND_ASSIGN(URLRequest);
 };
 
 }  // namespace net
 
 #endif  // NET_URL_REQUEST_URL_REQUEST_H_