Enforce the 'requirements' field in manifests.

chrome/browser/extensions/updater/extension_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_EXTENSIONS_UPDATER_EXTENSION_UPDATER_H_
 #define CHROME_BROWSER_EXTENSIONS_UPDATER_EXTENSION_UPDATER_H_
 #pragma once
 
 #include <list>
 #include <stack>
@@ skipping 75 matching lines @@
  private:
   friend class ExtensionUpdaterTest;
   friend class ExtensionUpdaterFileHandler;
 
   // FetchedCRXFile holds information about a CRX file we fetched to disk,
   // but have not yet installed.
   struct FetchedCRXFile {
     FetchedCRXFile();
     FetchedCRXFile(const std::string& id,
                    const FilePath& path,
-                   const GURL& download_url);
+                   const GURL& download_url,
+                   const bool is_sync);
     ~FetchedCRXFile();
 
     std::string id;
     FilePath path;
     GURL download_url;
+    bool is_sync;
   };
 
   // Computes when to schedule the first update check.
   base::TimeDelta DetermineFirstCheckDelay();
 
   // Sets the timer to call TimerFired after roughly |target_delay| from now.
   // To help spread load evenly on servers, this method adds some random
   // jitter. It also saves the scheduled time so it can be reloaded on
   // browser restart.
   void ScheduleNextCheck(const base::TimeDelta& target_delay);
@@ skipping 11 matching lines @@
 
   // Implenentation of ExtensionDownloaderDelegate.
   virtual void OnExtensionDownloadFailed(const std::string& id,
                                          Error error,
                                          const PingResult& ping) OVERRIDE;
 
   virtual void OnExtensionDownloadFinished(const std::string& id,
                                            const FilePath& path,
                                            const GURL& download_url,
                                            const std::string& version,
-                                           const PingResult& ping) OVERRIDE;
+                                           const PingResult& ping,
+                                           const bool is_sync) OVERRIDE;
 
   virtual void OnBlacklistDownloadFinished(const std::string& data,
                                            const std::string& package_hash,
                                            const std::string& version,
                                            const PingResult& ping) OVERRIDE;
   virtual bool GetPingDataForExtension(
       const std::string& id,
       ManifestFetchData::PingData* ping_data) OVERRIDE;
 
   virtual std::string GetUpdateUrlData(const std::string& id) OVERRIDE;
@@ skipping 51 matching lines @@
 
   // Fetched CRX files waiting to be installed.
   std::stack<FetchedCRXFile> fetched_crx_files_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionUpdater);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_UPDATER_EXTENSION_UPDATER_H_