Fix DisownOpener and related tests.

content/browser/renderer_host/render_view_host_impl.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/browser/renderer_host/render_view_host_impl.h"
 
 #include <set>
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 1334 matching lines @@
 }
 
 WebPreferences RenderViewHostImpl::GetWebkitPreferences() {
   if (!web_preferences_.get()) {
     OnWebkitPreferencesChanged();
   }
   return *web_preferences_;
 }
 
 void RenderViewHostImpl::DisownOpener() {
-  // This should only be called when swapped out.
-  DCHECK(IsSwappedOut());
-
   Send(new ViewMsg_DisownOpener(GetRoutingID()));
 }
 
 void RenderViewHostImpl::UpdateWebkitPreferences(const WebPreferences& prefs) {
   web_preferences_.reset(new WebPreferences(prefs));
   Send(new ViewMsg_UpdateWebPreferences(GetRoutingID(), prefs));
 }
 
 void RenderViewHostImpl::OnWebkitPreferencesChanged() {
   // This is defensive code to avoid infinite loops due to code run inside
@@ skipping 156 matching lines @@
   FrameTree* frame_tree = delegate_->GetFrameTree();
 
   frame_tree->ResetForMainFrameSwap();
 }
 
 void RenderViewHostImpl::SelectWordAroundCaret() {
   Send(new ViewMsg_SelectWordAroundCaret(GetRoutingID()));
 }
 
 }  // namespace content