Simplifies the structure of app_list search a bit.

ui/app_list/search_provider.h

 // Copyright 2014 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 UI_APP_LIST_SEARCH_PROVIDER_H_
 #define UI_APP_LIST_SEARCH_PROVIDER_H_
 
 #include "base/basictypes.h"
 #include "base/callback.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 16 matching lines @@
   // Invoked to start a query.
   virtual void Start(const base::string16& query) = 0;
 
   // Invoked to stop the current query and no more results changes.
   virtual void Stop() = 0;
 
   void set_result_changed_callback(const ResultChangedCallback& callback) {
     result_changed_callback_ = callback;
   }
 
-  // TODO(mukai): Fix the ownership and copying of the results.
-  void ReleaseResult(std::vector<SearchResult*>* results);
-
   const Results& results() const { return results_; }
 
  protected:
   // Interface for the derived class to generate search results.
   void Add(scoped_ptr<SearchResult> result);
   void ClearResults();
 
  private:
   void FireResultChanged();
 
   ResultChangedCallback result_changed_callback_;
   Results results_;
 
   DISALLOW_COPY_AND_ASSIGN(SearchProvider);
 };
 
 }  // namespace app_list
 
 #endif  // UI_APP_LIST_SEARCH_PROVIDER_H_