Fixed file_version_info so that it finds Mac values correctly.

chrome/browser/upgrade_detector.cc

 // 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.
 
 #include "chrome/browser/upgrade_detector.h"
 
 #include <string>
 
 #include "base/command_line.h"
 #include "base/singleton.h"
@@ skipping 96 matching lines @@
     if (!base::GetAppOutput(command_line, &reply)) {
       DLOG(ERROR) << "Failed to get current file version";
       return;
     }
 
     installed_version.reset(Version::GetVersionFromString(ASCIIToUTF16(reply)));
 #endif
 
     // Get the version of the currently *running* instance of Chrome.
     chrome::VersionInfo version_info;
-    if (!version_info.is_valid()) {
-      NOTREACHED() << "Failed to get current file version";
-      return;
-    }
     scoped_ptr<Version> running_version(
         Version::GetVersionFromString(ASCIIToUTF16(version_info.Version())));
     if (running_version.get() == NULL) {
       NOTREACHED() << "Failed to parse version info";
       return;
     }
 
     // |installed_version| may be NULL when the user downgrades on Linux (by
     // switching from dev to beta channel, for example). The user needs a
     // restart in this case as well. See http://crbug.com/46547
@@ skipping 72 matching lines @@
 }
 
 void UpgradeDetector::NotifyOnUpgrade() {
   notify_upgrade_ = true;
 
   NotificationService::current()->Notify(
       NotificationType::UPGRADE_RECOMMENDED,
       Source<UpgradeDetector>(this),
       NotificationService::NoDetails());
 }