[Android] Remove search feature from enhanced bookmarks

components/enhanced_bookmarks/bookmark_server_search_service.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 COMPONENTS_ENHANCED_BOOKMARKS_BOOKMARK_SERVER_SEARCH_SERVICE_H_
-#define COMPONENTS_ENHANCED_BOOKMARKS_BOOKMARK_SERVER_SEARCH_SERVICE_H_
-
-#include <string>
-#include <vector>
-
-#include "base/containers/mru_cache.h"
-#include "components/enhanced_bookmarks/bookmark_server_service.h"
-#include "net/url_request/url_fetcher.h"
-
-namespace enhanced_bookmarks {
-
-class EnhancedBookmarkModel;
-
-// Sends requests to the bookmark server to search for bookmarks relevant to a
-// given query. Will handle one outgoing request at a time.
-class BookmarkServerSearchService : public BookmarkServerService {
- public:
-  BookmarkServerSearchService(
-      scoped_refptr<net::URLRequestContextGetter> request_context_getter,
-      ProfileOAuth2TokenService* token_service,
-      SigninManagerBase* signin_manager,
-      EnhancedBookmarkModel* bookmark_model);
-  ~BookmarkServerSearchService() override;
-
-  // Triggers a search. The query must not be empty. A call to this method
-  // cancels any previous searches. If there have been multiple queries in
-  // between, onChange will only be called for the last query.
-  // Note this method will be synchronous if query hits the cache.
-  void Search(const std::string& query);
-
-  // Returns search results for a query. Results for a query are only available
-  // after Search() is called and after then OnChange() observer methods has
-  // been sent.This method might return an empty vector, meaning there are no
-  // bookmarks matching the given query. Returning null means we are still
-  // loading and no results have come to the client. Previously cancelled
-  // queries will not trigger onChange(), and this method will also return null
-  // for queries that have never been passed to Search() before.
-  scoped_ptr<std::vector<const bookmarks::BookmarkNode*>> ResultForQuery(
-      const std::string& query);
-
- protected:
-  scoped_ptr<net::URLFetcher> CreateFetcher() override;
-
-  bool ProcessResponse(const std::string& response,
-                       bool* should_notify) override;
-
-  void CleanAfterFailure() override;
-
-  // EnhancedBookmarkModelObserver methods.
-  void EnhancedBookmarkModelLoaded() override{};
-  void EnhancedBookmarkAdded(const bookmarks::BookmarkNode* node) override;
-  void EnhancedBookmarkRemoved(const bookmarks::BookmarkNode* node) override {}
-  void EnhancedBookmarkNodeChanged(
-      const bookmarks::BookmarkNode* node) override {}
-  void EnhancedBookmarkAllUserNodesRemoved() override;
-  void EnhancedBookmarkRemoteIdChanged(const bookmarks::BookmarkNode* node,
-                                       const std::string& old_remote_id,
-                                       const std::string& remote_id) override;
-
- private:
-  // Cache for previous search result, a map from a query string to vector of
-  // star_ids.
-  base::MRUCache<std::string, std::vector<std::string>> cache_;
-  // The query currently on the fly, and is cleared as soon as the result is
-  // available.
-  std::string current_query_;
-  DISALLOW_COPY_AND_ASSIGN(BookmarkServerSearchService);
-};
-
-}  // namespace enhanced_bookmarks
-
-#endif  // COMPONENTS_ENHANCED_BOOKMARKS_BOOKMARK_SERVER_SEARCH_SERVICE_H_