Start using the proxy resolve IPC for plugins....

chrome/browser/net/resolve_proxy_msg_helper.cc

+// Copyright (c) 2009 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 "chrome/browser/net/resolve_proxy_msg_helper.h"
+
+#include "base/compiler_specific.h"
+#include "chrome/browser/profile.h"
+#include "net/base/net_errors.h"
+#include "net/url_request/url_request_context.h"
+
+ResolveProxyMsgHelper::ResolveProxyMsgHelper(Delegate* delegate,
+                                             net::ProxyService* proxy_service)
+    : proxy_service_(NULL),
+      ALLOW_THIS_IN_INITIALIZER_LIST(callback_(
+          this, &ResolveProxyMsgHelper::OnResolveProxyCompleted)),
+      delegate_(delegate),
+      proxy_service_override_(proxy_service) {
+}
+
+void ResolveProxyMsgHelper::Start(const GURL& url, IPC::Message* reply_msg) {
+  // Enqueue the pending request.
+  pending_requests_.push_back(PendingRequest(url, reply_msg));
+
+  // If nothing is in progress, start.
+  if (pending_requests_.size() == 1)
+    StartPendingRequest();
+}
+
+void ResolveProxyMsgHelper::OnResolveProxyCompleted(int result) {
+  CHECK(!pending_requests_.empty());
+
+  // Notify the delegate of completion.
+  const PendingRequest& completed_req = pending_requests_.front();
+  delegate_->OnResolveProxyCompleted(completed_req.reply_msg,
+                                     result,
+                                     proxy_info_.GetAnnotatedProxyList());
+
+  // Clear the current (completed) request.
+  pending_requests_.pop_front();
+  proxy_service_ = NULL;
+
+  // Start the next request.
+  if (!pending_requests_.empty())
+    StartPendingRequest();
+}
+
+void ResolveProxyMsgHelper::StartPendingRequest() {
+  PendingRequest& req = pending_requests_.front();
+
+  // Verify the request wasn't started yet.
+  DCHECK(NULL == req.pac_req);
+  DCHECK(NULL == proxy_service_);
+
+  // Start the request.
+  proxy_service_ = GetProxyService();
+  int result = proxy_service_->ResolveProxy(
+      req.url, &proxy_info_, &callback_, &req.pac_req);
+
+  // Completed synchronously.
+  if (result != net::ERR_IO_PENDING)
+    OnResolveProxyCompleted(result);
+}
+
+net::ProxyService* ResolveProxyMsgHelper::GetProxyService() const {
+  // Unit-tests specify their own proxy service to use.
+  if (proxy_service_override_)
+    return proxy_service_override_;
+
+  // Otherwise use the browser's global proxy service.
+  return Profile::GetDefaultRequestContext()->proxy_service();
+}
+
+ResolveProxyMsgHelper::~ResolveProxyMsgHelper() {
+  // Clear all pending requests.
+  if (!pending_requests_.empty()) {
+    PendingRequest req = pending_requests_.front();
+    proxy_service_->CancelPacRequest(req.pac_req);
+  }
+
+  for (PendingRequestList::iterator it = pending_requests_.begin();
+       it != pending_requests_.end();
+       ++it) {
+    delete it->reply_msg;
+  }
+
+  proxy_service_ = NULL;
+  pending_requests_.clear();
+}