Instant: small cleanups

chrome/browser/ui/search/search_model.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_SEARCH_SEARCH_MODEL_H_
 #define CHROME_BROWSER_UI_SEARCH_SEARCH_MODEL_H_
 
 #include "base/macros.h"
 #include "base/observer_list.h"
 #include "chrome/common/search/search_types.h"
 
 class SearchModelObserver;
 
 // Represents whether a page supports Instant.
 enum InstantSupportState {
   INSTANT_SUPPORT_NO,
   INSTANT_SUPPORT_YES,
-  INSTANT_SUPPORT_UNKNOWN,
 };
 
 // An observable model for UI components that care about search model state
 // changes.
 class SearchModel {
  public:
   struct State {
     State();
     State(const SearchMode& mode, InstantSupportState instant_support);
 
@@ skipping 38 matching lines @@
   // Current state of model.
   State state_;
 
   // Observers.
   base::ObserverList<SearchModelObserver> observers_;
 
   DISALLOW_COPY_AND_ASSIGN(SearchModel);
 };
 
 #endif  // CHROME_BROWSER_UI_SEARCH_SEARCH_MODEL_H_