Use a direct include of the message_loop header in content/, part 3.

content/browser/web_contents/web_contents_delegate_unittest.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 "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
-#include "base/message_loop.h"
+#include "base/message_loop/message_loop.h"
+#include "content/browser/renderer_host/test_render_view_host.h"
 #include "content/browser/web_contents/web_contents_impl.h"
-#include "content/browser/renderer_host/test_render_view_host.h"
 #include "content/public/browser/web_contents_delegate.h"
 #include "content/public/test/test_browser_context.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace content {
 
 class MockWebContentsDelegate : public WebContentsDelegate {
 };
 
 class WebContentsDelegateTest : public RenderViewHostImplTestHarness {
@@ skipping 37 matching lines @@
   delegate.reset(NULL);
   EXPECT_TRUE(contents_a->GetDelegate() == NULL);
   EXPECT_TRUE(contents_b->GetDelegate() == NULL);
 
   // Destroy the WebContentses and run the message loop to prevent leaks.
   contents_a.reset();
   contents_b.reset();
 }
 
 }  // namespace content