RenderViewTest: really drain the event loop before shutting down Blink.

content/public/test/render_view_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 "content/public/test/render_view_test.h"
 
 #include <stddef.h>
 
 #include <cctype>
 
@@ skipping 391 matching lines @@
   // (http://crbug.com/21508).
   base::RunLoop().RunUntilIdle();
 
 #if defined(OS_MACOSX)
   // Needs to run before blink::shutdown().
   autorelease_pool_.reset(NULL);
 #endif
 
   leak_detector->collectGarbageAndReport();
 
+  base::RunLoop().RunUntilIdle();
+
   blink_platform_impl_.Shutdown();
   blink::shutdown();
 
   platform_->PlatformUninitialize();
   platform_.reset();
   params_.reset();
   command_line_.reset();
 
   test_io_thread_.reset();
   ipc_support_.reset();
@@ skipping 294 matching lines @@
   TestRenderFrame* frame =
       static_cast<TestRenderFrame*>(impl->GetMainRenderFrame());
   frame->Navigate(common_params, StartNavigationParams(), request_params);
 
   // The load actually happens asynchronously, so we pump messages to process
   // the pending continuation.
   FrameLoadWaiter(frame).Wait();
 }
 
 }  // namespace content