webkit: Update the calls from RunAllPending() to RunUntilIdle().

webkit/tools/test_shell/test_shell_test.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 "webkit/tools/test_shell/test_shell_test.h"
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/file_path.h"
@@ skipping 24 matching lines @@
   data_dir_ = data_dir_.Append(FILE_PATH_LITERAL("data"));
   ASSERT_TRUE(file_util::PathExists(data_dir_));
 }
 
 void TestShellTest::TearDown() {
   // Loading a blank url clears the memory in the current page.
   test_shell_->LoadURL(GURL("about:blank"));
   test_shell_->DestroyWindow(test_shell_->mainWnd());
 
   // Flush the MessageLoop of any residual tasks.
-  MessageLoop::current()->RunAllPending();
+  MessageLoop::current()->RunUntilIdle();
 }
 
 void TestShellTest::CreateEmptyWindow() {
   TestShell::CreateNewWindow(GURL("about:blank"), &test_shell_);
 }