Fix the html select tag showing up at the wrong position. This was a regression from r166446.

content/browser/web_contents/interstitial_page_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/web_contents/interstitial_page_impl.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/compiler_specific.h"
@@ skipping 232 matching lines @@
   RenderWidgetHostView* old_view =
       web_contents_->GetRenderViewHost()->GetView();
   if (web_contents_->GetInterstitialPage() == this &&
       old_view && !old_view->IsShowing()) {
     // Show the original RVH since we're going away.  Note it might not exist if
     // the renderer crashed while the interstitial was showing.
     // Note that it is important that we don't call Show() if the view is
     // already showing. That would result in bad things (unparented HWND on
     // Windows for example) happening.
     old_view->Show();
+    // WebContentsView implementations cached a pointer to the interstitial view
+    // when we created it, so set the old original back.
+    web_contents_->GetView()->SetView(old_view);
   }
 
   // If the focus was on the interstitial, let's keep it to the page.
   // (Note that in unit-tests the RVH may not have a view).
   if (render_view_host_->GetView() &&
       render_view_host_->GetView()->HasFocus() &&
       web_contents_->GetRenderViewHost()->GetView()) {
     RenderWidgetHostViewPort::FromRWHV(
         web_contents_->GetRenderViewHost()->GetView())->Focus();
   }
@@ skipping 507 matching lines @@
 
   web_contents->GetDelegateView()->TakeFocus(reverse);
 }
 
 void InterstitialPageImpl::InterstitialPageRVHDelegateView::OnFindReply(
     int request_id, int number_of_matches, const gfx::Rect& selection_rect,
     int active_match_ordinal, bool final_update) {
 }
 
 }  // namespace content