Always run the RunLoop in StartupHelper::ValidateCrx.

chrome/browser/extensions/startup_helper.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/extensions/startup_helper.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/files/file_path.h"
@@ skipping 163 matching lines @@
   if (!temp_dir.CreateUniqueTempDir()) {
     *error = std::string("Failed to create temp dir");
     return false;
   }
 
   base::RunLoop run_loop;
   CRXFileInfo file(path);
   scoped_refptr<ValidateCrxHelper> helper(
       new ValidateCrxHelper(file, temp_dir.path(), &run_loop));
   helper->Start();
-  if (!helper->finished())
-    run_loop.Run();
+  run_loop.Run();
 
   bool success = helper->success();
   if (!success)
     *error = base::UTF16ToUTF8(helper->error());
   return success;
 }
 
 StartupHelper::~StartupHelper() {
   if (pack_job_.get())
     pack_job_->ClearClient();
 }
 
 }  // namespace extensions