Fixes bug in instant where we would end up incorrectly using the

chrome/browser/autocomplete/autocomplete_edit.cc

 // Copyright (c) 2011 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/autocomplete/autocomplete_edit.h"
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/metrics/histogram.h"
@@ skipping 1001 matching lines @@
 
   TabContentsWrapper* tab = controller_->GetTabContentsWrapper();
 
   if (!tab)
     return false;
 
   if (user_input_in_progress() && popup_->IsOpen()) {
     return instant->Update(tab, match, view_->GetText(), UseVerbatimInstant(),
                            suggested_text);
   } else {
-    instant->DestroyPreviewContentsAndLeaveActive();
+    instant->Hide();
     return false;
   }
 }
 
 void AutocompleteEditModel::DoPrerender(const AutocompleteMatch& match) {
   // Do not prerender if the destination URL is the same as the current URL.
   if (match.destination_url == PermanentURL())
     return;
   if (user_input_in_progress() && popup_->IsOpen()) {
     TabContentsWrapper* tab = controller_->GetTabContentsWrapper();
@@ skipping 23 matching lines @@
 //  static
 bool AutocompleteEditModel::IsSpaceCharForAcceptingKeyword(wchar_t c) {
   switch (c) {
     case 0x0020:  // Space
     case 0x3000:  // Ideographic Space
       return true;
     default:
       return false;
   }
 }