Add "UninstallReason" parameter to ExtensionRegistryObserver::OnExtensionUninstalled.

chrome/browser/sync_file_system/sync_file_system_service.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/browser/sync_file_system/sync_file_system_service.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/format_macros.h"
@@ skipping 644 matching lines @@
   DVLOG(1) << "Handle extension notification for UNLOAD(DISABLE): "
            << app_origin;
   GetRemoteService(app_origin)->DisableOrigin(
       app_origin,
       base::Bind(&DidHandleUnloadedEvent, app_origin));
   local_service_->SetOriginEnabled(app_origin, false);
 }
 
 void SyncFileSystemService::OnExtensionUninstalled(
     content::BrowserContext* browser_context,
-    const Extension* extension) {
+    const Extension* extension,
+    extensions::UninstallReason reason) {
   RemoteFileSyncService::UninstallFlag flag =
       RemoteFileSyncService::UNINSTALL_AND_PURGE_REMOTE;
   // If it's loaded from an unpacked package and with key: field,
   // the uninstall will not be sync'ed and the user might be using the
   // same app key in other installs, so avoid purging the remote folder.
   if (extensions::Manifest::IsUnpackedLocation(extension->location()) &&
       extension->manifest()->HasKey(extensions::manifest_keys::kKey)) {
     flag = RemoteFileSyncService::UNINSTALL_AND_KEEP_REMOTE;
   }
 
@@ skipping 76 matching lines @@
     v2_remote_service_->AddServiceObserver(v2_remote_syncer.get());
     v2_remote_service_->AddFileStatusObserver(this);
     v2_remote_service_->SetRemoteChangeProcessor(local_service_.get());
     v2_remote_service_->SetSyncEnabled(sync_enabled_);
     remote_sync_runners_.push_back(v2_remote_syncer.release());
   }
   return v2_remote_service_.get();
 }
 
 }  // namespace sync_file_system