base::Bind: Convert net/proxy.

net/proxy/dhcp_proxy_script_fetcher_win.h

Index: net/proxy/dhcp_proxy_script_fetcher_win.h
diff --git a/net/proxy/dhcp_proxy_script_fetcher_win.h b/net/proxy/dhcp_proxy_script_fetcher_win.h
index 0d7dc3ec5297328fed72e5531acbde6060053f66..ce6c7dc98a480d6b8f0239d0339278f1fa57dff4 100644
--- a/net/proxy/dhcp_proxy_script_fetcher_win.h
+++ b/net/proxy/dhcp_proxy_script_fetcher_win.h
@@ -35,7 +35,8 @@ class NET_EXPORT_PRIVATE DhcpProxyScriptFetcherWin
   virtual ~DhcpProxyScriptFetcherWin();
 
   // DhcpProxyScriptFetcher implementation.
-  int Fetch(string16* utf16_text, OldCompletionCallback* callback) OVERRIDE;
+  int Fetch(string16* utf16_text,
+            const net::CompletionCallback& callback) OVERRIDE;
   void Cancel() OVERRIDE;
   const GURL& GetPacURL() const OVERRIDE;
   std::string GetFetcherName() const OVERRIDE;
@@ -138,14 +139,11 @@ class NET_EXPORT_PRIVATE DhcpProxyScriptFetcherWin
   typedef ScopedVector<DhcpProxyScriptAdapterFetcher> FetcherVector;
   FetcherVector fetchers_;
 
-  // Callback invoked when any fetcher completes.
-  OldCompletionCallbackImpl<DhcpProxyScriptFetcherWin> fetcher_callback_;
-
   // Number of fetchers we are waiting for.
   int num_pending_fetchers_;
 
   // Lets our client know we're done. Not valid in states START or DONE.
-  OldCompletionCallback* client_callback_;
+  net::CompletionCallback callback_;
 
   // Pointer to string we will write results to. Not valid in states
   // START and DONE.