Added version info to WebUI

chrome/browser/chromeos/login/version_info_updater.h

Index: chrome/browser/chromeos/login/version_info_updater.h
diff --git a/chrome/browser/chromeos/login/version_info_updater.h b/chrome/browser/chromeos/login/version_info_updater.h
new file mode 100644
index 0000000000000000000000000000000000000000..1f2e6be2f0e8442c0836a0d5ffdf1ebc9ff8ece6
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+++ b/chrome/browser/chromeos/login/version_info_updater.h
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+// Copyright (c) 2011 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_BROWSER_CHROMEOS_LOGIN_VERSION_INFO_UPDATER_H_
+#define CHROME_BROWSER_CHROMEOS_LOGIN_VERSION_INFO_UPDATER_H_
+#pragma once
+
+#include <string>
+
+#include "chrome/browser/chromeos/boot_times_loader.h"
+#include "chrome/browser/chromeos/version_loader.h"
+#include "chrome/browser/policy/cloud_policy_subsystem.h"
+
+namespace chromeos {
+
+// Fetches all info we want to show on OOBE/Login screens about system
+// version, boot times and cloud policy.
+class VersionInfoUpdater : policy::CloudPolicySubsystem::Observer {
+ public:
+  class Delegate {
+   public:
+    virtual ~Delegate() {}
+
+    // Called when OS version label should be updated.
+    virtual void OnOSVersionLabelTextUpdated(
+        const std::string& os_version_label_text) = 0;
+
+    // Called when boot times label should be updated.
+    virtual void OnBootTimesLabelTextUpdated(
+        const std::string& boot_times_label_text) = 0;
+  };
+
+  explicit VersionInfoUpdater(Delegate* delegate);
+  virtual ~VersionInfoUpdater();
+
+  // Sets delegate.
+  void set_delegate(Delegate* delegate) { delegate_ = delegate; }
+
+  // Starts fetching version info. The delegate will be notified when update
+  // is received.
+  void StartUpdate(bool is_official_build);
+
+ private:
+  // policy::CloudPolicySubsystem::Observer methods:
+  virtual void OnPolicyStateChanged(
+      policy::CloudPolicySubsystem::PolicySubsystemState state,
+      policy::CloudPolicySubsystem::ErrorDetails error_details) OVERRIDE;
+
+  // Update the version label.
+  void UpdateVersionLabel();
+
+  // Check and update enterprise domain.
+  void UpdateEnterpriseInfo();
+
+  // Set enterprise domain name.
+  void SetEnterpriseInfo(const std::string& domain_name,
+                         const std::string& status_text);
+
+  // Callback from chromeos::VersionLoader giving the version.
+  void OnVersion(VersionLoader::Handle handle, std::string version);
+  // Callback from chromeos::InfoLoader giving the boot times.
+  void OnBootTimes(
+      BootTimesLoader::Handle handle, BootTimesLoader::BootTimes boot_times);
+
+  // Handles asynchronously loading the version.
+  VersionLoader version_loader_;
+  // Used to request the version.
+  CancelableRequestConsumer version_consumer_;
+
+  // Handles asynchronously loading the boot times.
+  BootTimesLoader boot_times_loader_;
+  // Used to request the boot times.
+  CancelableRequestConsumer boot_times_consumer_;
+
+  // Information pieces for version label.
+  std::string version_text_;
+  std::string enterprise_domain_text_;
+  std::string enterprise_status_text_;
+
+  // Full text for the OS version label.
+  std::string os_version_label_text_;
+
+  // CloudPolicySubsysterm observer registrar
+  scoped_ptr<policy::CloudPolicySubsystem::ObserverRegistrar>
+      cloud_policy_registrar_;
+
+  Delegate* delegate_;
+
+  DISALLOW_COPY_AND_ASSIGN(VersionInfoUpdater);
+};
+
+}  // namespace chromeos
+
+#endif  // CHROME_BROWSER_CHROMEOS_LOGIN_VERSION_INFO_UPDATER_H_
+