InstantExtended: Remove overlay control code.

chrome/browser/ui/search/instant_overlay_model.cc

 // Copyright 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 "chrome/browser/ui/search/instant_overlay_model.h"
 
 #include "chrome/browser/ui/search/instant_controller.h"
 #include "chrome/browser/ui/search/instant_overlay_model_observer.h"
 
 InstantOverlayModel::InstantOverlayModel(InstantController* controller)
@@ skipping 32 matching lines @@
   if (overlay_contents_ == overlay_contents)
     return;
 
   overlay_contents_ = overlay_contents;
 
   FOR_EACH_OBSERVER(InstantOverlayModelObserver, observers_,
                     OverlayStateChanged(*this));
 }
 
 content::WebContents* InstantOverlayModel::GetOverlayContents() const {
-  // |controller_| maybe NULL durning tests.
-  if (controller_)
-    return controller_->GetOverlayContents();
   return overlay_contents_;
 }
 
 void InstantOverlayModel::AddObserver(InstantOverlayModelObserver* observer) {
   observers_.AddObserver(observer);
 }
 
 void InstantOverlayModel::RemoveObserver(
     InstantOverlayModelObserver* observer) {
   observers_.RemoveObserver(observer);
 }