Retry reinstallation of corrupted policy extensions.

chrome/browser/extensions/extension_service.cc

 // Copyright (c) 2013 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/extensions/extension_service.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <iterator>
@@ skipping 1309 matching lines @@
 
 // Some extensions will autoupdate themselves externally from Chrome.  These
 // are typically part of some larger client application package. To support
 // these, the extension will register its location in the preferences file
 // (and also, on Windows, in the registry) and this code will periodically
 // check that location for a .crx file, which it will then install locally if
 // a new version is available.
 // Errors are reported through ExtensionErrorReporter. Success is not
 // reported.
 void ExtensionService::CheckForExternalUpdates() {
+  if (external_updates_disabled_for_test_)
+    return;
+
   CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   TRACE_EVENT0("browser,startup", "ExtensionService::CheckForExternalUpdates");
   SCOPED_UMA_HISTOGRAM_TIMER("Extensions.CheckForExternalUpdatesTime");
 
   // Note that this installation is intentionally silent (since it didn't
   // go through the front-end).  Extensions that are registered in this
   // way are effectively considered 'pre-bundled', and so implicitly
   // trusted.  In general, if something has HKLM or filesystem access,
   // they could install an extension manually themselves anyway.
 
@@ skipping 1216 matching lines @@
 }
 
 void ExtensionService::OnProfileDestructionStarted() {
   ExtensionIdSet ids_to_unload = registry_->enabled_extensions().GetIDs();
   for (ExtensionIdSet::iterator it = ids_to_unload.begin();
        it != ids_to_unload.end();
        ++it) {
     UnloadExtension(*it, UnloadedExtensionInfo::REASON_PROFILE_SHUTDOWN);
   }
 }