Cleanup: Remove some unused code, or make them platform specific.

chrome/browser/autocomplete/autocomplete_controller.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_AUTOCOMPLETE_AUTOCOMPLETE_CONTROLLER_H_
 #define CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_CONTROLLER_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/gtest_prod_util.h"
@@ skipping 27 matching lines @@
 //
 // IMPORTANT: There is NO THREAD SAFETY built into this portion of the
 // autocomplete system.  All calls to and from the AutocompleteController should
 // happen on the same thread.  AutocompleteProviders are responsible for doing
 // their own thread management when they need to return matches asynchronously.
 //
 // The coordinator for autocomplete queries, responsible for combining the
 // matches from a series of providers into one AutocompleteResult.
 class AutocompleteController : public AutocompleteProviderListener {
  public:
-  // Used to indicate an index that is not selected in a call to Update().
-  static const int kNoItemSelected;
-
   // |provider_types| is a bitmap containing AutocompleteProvider::Type values
   // that will (potentially, depending on platform, flags, etc.) be
   // instantiated.
   AutocompleteController(Profile* profile,
                          AutocompleteControllerDelegate* delegate,
                          int provider_types);
   ~AutocompleteController();
 
   // Starts an autocomplete query, which continues until all providers are
   // done or the query is Stop()ed.  It is safe to Start() a new query without
@@ skipping 179 matching lines @@
 
   // Has StartZeroSuggest() been called but not Start()?
   bool in_zero_suggest_;
 
   Profile* profile_;
 
   DISALLOW_COPY_AND_ASSIGN(AutocompleteController);
 };
 
 #endif  // CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_CONTROLLER_H_