Special case the gallery to not show the scary download roadblock.

chrome/browser/extensions/extensions_service.h

 // Copyright (c) 2009 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_EXTENSIONS_SERVICE_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSIONS_SERVICE_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 53 matching lines @@
   // The name of the directory inside the profile where extensions are
   // installed to.
   static const char* kInstallDirectoryName;
 
   // If auto-updates are turned on, default to running every 5 hours.
   static const int kDefaultUpdateFrequencySeconds = 60 * 60 * 5;
 
   // The name of the file that the current active version number is stored in.
   static const char* kCurrentVersionFileName;
 
-  // Hack:
-  // Extensions downloaded from kGalleryDownloadURLPrefix initiated from pages
-  // with kGalleryURLPrefix will not require --enable-extensions and will be
-  // prompt-free.
-  static const char* kGalleryDownloadURLPrefix;
-  static const char* kGalleryURLPrefix;
-
   // Determine if a given extension download should be treated as if it came
   // from the gallery.
   static bool IsDownloadFromGallery(const GURL& download_url,
                                     const GURL& referrer_url);
 
   ExtensionsService(Profile* profile,
                     const CommandLine* command_line,
                     PrefService* prefs,
                     const FilePath& install_directory,
                     bool autoupdate_enabled);
@@ skipping 301 matching lines @@
 
   // A map of all external extension providers.
   typedef std::map<Extension::Location,
                    linked_ptr<ExternalExtensionProvider> > ProviderMap;
   ProviderMap external_extension_providers_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionsServiceBackend);
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSIONS_SERVICE_H_