Add an outdated upgrade bubble view.

chrome/browser/upgrade_detector_impl.h

 // 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_UPGRADE_DETECTOR_IMPL_H_
 #define CHROME_BROWSER_UPGRADE_DETECTOR_IMPL_H_
 
 #include "base/memory/weak_ptr.h"
+#include "base/time.h"
 #include "base/timer.h"
 #include "chrome/browser/upgrade_detector.h"
 
 template <typename T> struct DefaultSingletonTraits;
 
 class UpgradeDetectorImpl : public UpgradeDetector {
  public:
   virtual ~UpgradeDetectorImpl();
 
   // Returns the singleton instance.
@@ skipping 24 matching lines @@
   base::RepeatingTimer<UpgradeDetectorImpl> upgrade_notification_timer_;
 
   // We use this factory to create callback tasks for UpgradeDetected. We pass
   // the task to the actual upgrade detection code, which is in
   // DetectUpgradeTask.
   base::WeakPtrFactory<UpgradeDetectorImpl> weak_factory_;
 
   // True if this build is a dev or canary channel build.
   bool is_unstable_channel_;
 
+  // The date the binaries were built.
+  base::Time build_date_;
+
   DISALLOW_COPY_AND_ASSIGN(UpgradeDetectorImpl);
 };
 
 
 #endif  // CHROME_BROWSER_UPGRADE_DETECTOR_IMPL_H_