Remove unnecessary references to URLRequestContext.

net/proxy/dhcp_proxy_script_adapter_fetcher_win.cc

 // Copyright (c) 2011 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 "net/proxy/dhcp_proxy_script_adapter_fetcher_win.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
+#include "base/logging.h"
 #include "base/message_loop_proxy.h"
 #include "base/metrics/histogram.h"
 #include "base/sys_string_conversions.h"
 #include "base/threading/worker_pool.h"
 #include "base/time.h"
 #include "net/base/net_errors.h"
 #include "net/proxy/dhcpcsvc_init_win.h"
 #include "net/proxy/proxy_script_fetcher_impl.h"
 #include "net/url_request/url_request_context.h"
 
 #include <windows.h>
 #include <winsock2.h>
 #include <dhcpcsdk.h>
 #pragma comment(lib, "dhcpcsvc.lib")
 
 namespace {
 
 // Maximum amount of time to wait for response from the Win32 DHCP API.
 const int kTimeoutMs = 2000;
 
 }  // namespace
 
 namespace net {
 
 DhcpProxyScriptAdapterFetcher::DhcpProxyScriptAdapterFetcher(
     URLRequestContext* url_request_context)
     : state_(STATE_START),
       result_(ERR_IO_PENDING),
       url_request_context_(url_request_context) {
+  DCHECK(url_request_context_);
 }
 
 DhcpProxyScriptAdapterFetcher::~DhcpProxyScriptAdapterFetcher() {
   Cancel();
 
   // The WeakPtr we passed to the worker thread may be destroyed on the
   // worker thread.  This detaches any outstanding WeakPtr state from
   // the current thread.
   base::SupportsWeakPtr<DhcpProxyScriptAdapterFetcher>::DetachFromThread();
 }
@@ skipping 234 matching lines @@
     // back a buffer with embedded NULLs, something is broken anyway.
     return std::string(
         std::string(reinterpret_cast<const char *>(wpad_params.Data),
                     wpad_params.nBytesData).c_str());
   }
 
   return "";
 }
 
 }  // namespace net