AU: Manual proxy support

http_fetcher.cc

Index: http_fetcher.cc
diff --git a/http_fetcher.cc b/http_fetcher.cc
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+++ b/http_fetcher.cc
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+// 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 "update_engine/http_fetcher.h"
+
+using std::deque;
+using std::string;
+
+namespace chromeos_update_engine {
+
+void HttpFetcher::SetPostData(const void* data, size_t size) {
+  post_data_set_ = true;
+  post_data_.clear();
+  const char *char_data = reinterpret_cast<const char*>(data);
+  post_data_.insert(post_data_.end(), char_data, char_data + size);
+}
+
+// Proxy methods to set the proxies, then to pop them off.
+void HttpFetcher::ResolveProxiesForUrl(const string& url) {
+  if (!proxy_resolver_) {
+    LOG(INFO) << "Not resolving proxies (no proxy resolver).";
+    return;
+  }
+  deque<string> proxies;
+  if (proxy_resolver_->GetProxiesForUrl(url, &proxies)) {
+    SetProxies(proxies);
+  }
+}
+
+}  // namespace chromeos_update_engine