Modify IsSyncable to only include Internal items and the Chrome Web Store

chrome/common/extensions/extension.cc

 // 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.
 
 #include "chrome/common/extensions/extension.h"
 
 #include <algorithm>
 
 #include "base/base64.h"
 #include "base/basictypes.h"
@@ skipping 3641 matching lines @@
         return SYNC_TYPE_APP;
 
     default:
       return SYNC_TYPE_NONE;
   }
 }
 
 bool Extension::IsSyncable() const {
   // TODO(akalin): Figure out if we need to allow some other types.
 
-  // We want to sync any extensions that are shown in the launcher because
-  // their positions should sync.
+  // We want to sync any extensions that are internal and the chrome web store.
   return location() == Extension::INTERNAL ||
-      ShouldDisplayInLauncher();
+      id() == extension_misc::kWebStoreAppId;
 }
 
 bool Extension::ShouldDisplayInLauncher() const {
   // All apps should be displayed on the NTP except for the Cloud Print App.
   return is_app() && id() != extension_misc::kCloudPrintAppId;
 }
 
 ExtensionInfo::ExtensionInfo(const DictionaryValue* manifest,
                              const std::string& id,
                              const FilePath& path,
@@ skipping 29 matching lines @@
     already_disabled(false),
     extension(extension) {}
 
 UpdatedExtensionPermissionsInfo::UpdatedExtensionPermissionsInfo(
     const Extension* extension,
     const ExtensionPermissionSet* permissions,
     Reason reason)
     : reason(reason),
       extension(extension),
       permissions(permissions) {}