AU: Make proxy resolution asynchronous.

http_fetcher_unittest.cc

 // Copyright (c) 2009 The Chromium OS 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 <unistd.h>
 
 #include <string>
 #include <utility>
 #include <vector>
 
@@ skipping 298 matching lines @@
   {
     PausingHttpFetcherTestDelegate delegate;
     scoped_ptr<HttpFetcher> fetcher(this->NewLargeFetcher());
     delegate.paused_ = false;
     delegate.loop_ = loop;
     delegate.fetcher_ = fetcher.get();
     fetcher->set_delegate(&delegate);
 
     typename TestFixture::HttpServer server;
     ASSERT_TRUE(server.started_);
-    GSource* timeout_source_;
-    timeout_source_ = g_timeout_source_new(0);  // ms
-    g_source_set_callback(timeout_source_, UnpausingTimeoutCallback, &delegate,
-                          NULL);
-    g_source_attach(timeout_source_, NULL);
+
+    guint callback_id = g_timeout_add(500, UnpausingTimeoutCallback, &delegate);
     fetcher->BeginTransfer(this->BigUrl());
 
     g_main_loop_run(loop);
-    g_source_destroy(timeout_source_);
+    g_source_remove(callback_id);
   }
   g_main_loop_unref(loop);
 }
 
 namespace {
 class AbortingHttpFetcherTestDelegate : public HttpFetcherDelegate {
  public:
   virtual void ReceivedBytes(HttpFetcher* fetcher,
                              const char* bytes, int length) {}
   virtual void TransferComplete(HttpFetcher* fetcher, bool successful) {
@@ skipping 465 matching lines @@
     StartTransferArgs start_xfer_args =
         { fetcher.get(), LocalServerUrlForPath(this->SmallUrl()) };
 
     g_timeout_add(0, StartTransfer, &start_xfer_args);
     g_main_loop_run(loop);
     g_main_loop_unref(loop);
   }
 }
 
 }  // namespace chromeos_update_engine