Persist the Instant API to committed search result pages.

chrome/browser/ui/cocoa/tab_contents/instant_preview_controller_mac.mm

 // 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/cocoa/tab_contents/instant_preview_controller_mac.h"
 
 #include "chrome/browser/instant/instant_model.h"
 #import "chrome/browser/ui/cocoa/browser_window_controller.h"
 #import "chrome/browser/ui/cocoa/tab_contents/previewable_contents_controller.h"
-#include "chrome/browser/ui/tab_contents/tab_contents.h"
 
 InstantPreviewControllerMac::InstantPreviewControllerMac(
     Browser* browser,
     BrowserWindowController* window,
     PreviewableContentsController* preview)
     : InstantPreviewController(browser),
       window_(window),
       preview_(preview) {
 }
 
 InstantPreviewControllerMac::~InstantPreviewControllerMac() {
 }
 
 void InstantPreviewControllerMac::PreviewStateChanged(
     const InstantModel& model) {
   if (model.mode().is_search_suggestions()) {
     // TODO(dhollowa): Needs height and units implementation on Mac.
-    [preview_ showPreview:model.GetPreviewContents()->web_contents()];
+    [preview_ showPreview:model.GetPreviewContents()];
   } else {
     [preview_ hidePreview];
   }
   [window_ updateBookmarkBarVisibilityWithAnimation:NO];
 }