Remove some platform specific stuff from views.

ui/app_list/search/history.h

Index: ui/app_list/search/history.h
diff --git a/ui/app_list/search/history.h b/ui/app_list/search/history.h
deleted file mode 100644
index 4026ec10616324be3035872fc5f725ee187be1fc..0000000000000000000000000000000000000000
--- a/ui/app_list/search/history.h
+++ /dev/null
@@ -1,65 +0,0 @@
-// Copyright 2013 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_HISTORY_H_
-#define UI_APP_LIST_SEARCH_HISTORY_H_
-
-#include <map>
-#include <string>
-
-#include "base/basictypes.h"
-#include "base/memory/ref_counted.h"
-#include "base/memory/scoped_ptr.h"
-#include "components/keyed_service/core/keyed_service.h"
-#include "ui/app_list/app_list_export.h"
-#include "ui/app_list/search/history_data_observer.h"
-#include "ui/app_list/search/history_types.h"
-
-namespace app_list {
-
-class HistoryData;
-class HistoryDataStore;
-
-namespace test {
-class SearchHistoryTest;
-}
-
-// History tracks the launch events of the search results and uses HistoryData
-// to build user learning data out of these events. The learning data is stored
-// as associations between user typed query and launched result id. There are
-// primary and secondary associations. See HistoryData comments to see how
-// they are built. The learning data is sent to the mixer to boost results that
-// have been launched before.
-class APP_LIST_EXPORT History : public KeyedService,
-                                public HistoryDataObserver {
- public:
-  explicit History(scoped_refptr<HistoryDataStore> store);
-  ~History() override;
-
-  // Returns true if the service is ready.
-  bool IsReady() const;
-
-  // Adds a launch event to the learning data.
-  void AddLaunchEvent(const std::string& query, const std::string& result_id);
-
-  // Gets all known search results that were launched using the given |query|
-  // or using queries that |query| is a prefix of.
-  scoped_ptr<KnownResults> GetKnownResults(const std::string& query) const;
-
- private:
-  friend class app_list::test::SearchHistoryTest;
-
-  // HistoryDataObserver overrides:
-  void OnHistoryDataLoadedFromStore() override;
-
-  scoped_ptr<HistoryData> data_;
-  scoped_refptr<HistoryDataStore> store_;
-  bool data_loaded_;
-
-  DISALLOW_COPY_AND_ASSIGN(History);
-};
-
-}  // namespace app_list
-
-#endif  // UI_APP_LIST_SEARCH_HISTORY_H_