Finish taking out render_messages.h include from other headers.

chrome/test/test_tab_contents.cc

 // Copyright (c) 2006-2008 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/test/test_tab_contents.h"
 
 #include "chrome/browser/tab_contents/navigation_entry.h"
+#include "chrome/common/render_messages.h"
 
 // static
 SiteInstance* TestTabContents::site_instance_ = NULL;
 
 TestTabContents::TestTabContents(TabContentsType type)
     : TabContents(type),
       commit_on_navigate_(false),
       next_page_id_(1) {
 }
 
@@ skipping 11 matching lines @@
   params.page_id = page_id;
   params.url = url;
   params.transition = PageTransition::LINK;
   params.should_update_history = false;
   params.gesture = NavigationGestureUser;
   params.is_post = false;
 
   NavigationController::LoadCommittedDetails details;
   controller()->RendererDidNavigate(params, &details);
 }