Adds the new URLRequest::OnBeforeNetworkStart hook to the

content/browser/loader/detachable_resource_handler.cc

 // Copyright 2013 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.
 
 #include "content/browser/loader/detachable_resource_handler.h"
 
 #include "base/logging.h"
 #include "base/time/time.h"
 #include "content/browser/loader/resource_request_info_impl.h"
 #include "net/base/io_buffer.h"
@@ skipping 115 matching lines @@
   DCHECK(!is_deferred_);
 
   if (!next_handler_)
     return true;
 
   bool ret = next_handler_->OnWillStart(request_id, url, &is_deferred_);
   *defer = is_deferred_;
   return ret;
 }
 
+bool DetachableResourceHandler::OnBeforeNetworkStart(int request_id,
+                                                     const GURL& url,
+                                                     bool* defer) {
+  DCHECK(!is_deferred_);
+
+  if (!next_handler_)
+    return true;
+
+  bool ret =
+      next_handler_->OnBeforeNetworkStart(request_id, url, &is_deferred_);
+  *defer = is_deferred_;
+  return ret;
+}
+
 bool DetachableResourceHandler::OnWillRead(int request_id,
                                            scoped_refptr<net::IOBuffer>* buf,
                                            int* buf_size,
                                            int min_size) {
   if (!next_handler_) {
     DCHECK_EQ(-1, min_size);
     if (!read_buffer_)
       read_buffer_ = new net::IOBuffer(kReadBufSize);
     *buf = read_buffer_;
     *buf_size = kReadBufSize;
@@ skipping 54 matching lines @@
 
 void DetachableResourceHandler::CancelAndIgnore() {
   controller()->CancelAndIgnore();
 }
 
 void DetachableResourceHandler::CancelWithError(int error_code) {
   controller()->CancelWithError(error_code);
 }
 
 }  // namespace content