Created a new process type called the service process to host background task...

chrome/service/gaia/service_gaia_authenticator.h

+// Copyright (c) 2010 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.
+
+#ifndef CHROME_SERVICE_GAIA_SERVICE_GAIA_AUTHENTICATOR_H_
+#define CHROME_SERVICE_GAIA_SERVICE_GAIA_AUTHENTICATOR_H_
+
+#include <string>
+
+#include "base/ref_counted.h"
+#include "base/waitable_event.h"
+#include "chrome/common/net/url_fetcher.h"
+#include "chrome/common/net/gaia/gaia_authenticator.h"
+
+namespace base {
+class MessageLoopProxy;
+}
+
+// A GaiaAuthenticator implementation to be used in the service process (where
+// we cannot rely on the existence of a Profile)
+class ServiceGaiaAuthenticator
+    : public base::RefCountedThreadSafe<ServiceGaiaAuthenticator>,
+      public URLFetcher::Delegate,
+      public gaia::GaiaAuthenticator {
+ public:
+  ServiceGaiaAuthenticator(const std::string& user_agent,
+                           const std::string& service_id,
+                           const std::string& gaia_url,
+                           base::MessageLoopProxy* io_message_loop_proxy);
+  ~ServiceGaiaAuthenticator();
+
+  // URLFetcher::Delegate implementation.
+  void OnURLFetchComplete(const URLFetcher *source, const GURL &url,
+                          const URLRequestStatus &status, int response_code,
+                          const ResponseCookies &cookies,
+                          const std::string &data);
+
+ protected:
+  // GaiaAuthenticator overrides.
+  virtual bool Post(const GURL& url, const std::string& post_body,
+                    unsigned long* response_code, std::string* response_body);
+  virtual int GetBackoffDelaySeconds(int current_backoff_delay);
+
+ private:
+  void DoPost(const GURL& post_url, const std::string& post_body);
+
+  base::WaitableEvent http_post_completed_;
+  scoped_refptr<base::MessageLoopProxy> io_message_loop_proxy_;
+  int http_response_code_;
+  std::string response_data_;
+  scoped_ptr<URLFetcher> request_;
+
+  DISALLOW_COPY_AND_ASSIGN(ServiceGaiaAuthenticator);
+};
+
+#endif  // CHROME_SERVICE_GAIA_SERVICE_GAIA_AUTHENTICATOR_H_
+