Drop struct BootStat and all usage (boot stats are now sent from chromeos code).

chrome/browser/chromeos/login/version_info_updater.h

 // Copyright (c) 2012 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_
 
 #include <string>
 
 #include "base/memory/weak_ptr.h"
@@ skipping 12 matching lines @@
                            public content::NotificationObserver {
  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;
-
     // Called when the enterprise info notice should be updated.
     virtual void OnEnterpriseInfoUpdated(
         const std::string& enterprise_info) = 0;
   };
 
   explicit VersionInfoUpdater(Delegate* delegate);
   virtual ~VersionInfoUpdater();
 
   // Sets delegate.
   void set_delegate(Delegate* delegate) { delegate_ = delegate; }
@@ skipping 17 matching lines @@
   void UpdateVersionLabel();
 
   // Check and update enterprise domain.
   void UpdateEnterpriseInfo();
 
   // Set enterprise domain name.
   void SetEnterpriseInfo(const std::string& domain_name);
 
   // Callback from chromeos::VersionLoader giving the version.
   void OnVersion(const std::string& version);
-  // Callback from chromeos::InfoLoader giving the boot times.
-  void OnBootTimes(const BootTimesLoader::BootTimes& boot_times);
-  // Null callback from chromeos::InfoLoader.
-  void OnBootTimesNoop(const BootTimesLoader::BootTimes& boot_times);
 
   // Handles asynchronously loading the version.
   VersionLoader version_loader_;
   // Handles asynchronously loading the boot times.
   BootTimesLoader boot_times_loader_;
   // Used to request version and boot times.
   CancelableTaskTracker tracker_;
 
   // Information pieces for version label.
   std::string version_text_;
 
   // Full text for the OS version label.
   std::string os_version_label_text_;
 
   chromeos::CrosSettings* cros_settings_;
 
   Delegate* delegate_;
 
   // Weak pointer factory so we can give our callbacks for invocation
   // at a later time without worrying that they will actually try to
   // happen after the lifetime of this object.
   base::WeakPtrFactory<VersionInfoUpdater> weak_pointer_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(VersionInfoUpdater);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_VERSION_INFO_UPDATER_H_