Use EnablePlayStoreAppSearch feature flag.

ui/app_list/views/tile_item_view.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_VIEWS_TILE_ITEM_VIEW_H_
 #define UI_APP_LIST_VIEWS_TILE_ITEM_VIEW_H_
 
+#include <memory>
+#include <utility>

[oshima, 2017/07/07 23:59:56]

do you need utility here?

[Jiaquan He, 2017/07/08 00:43:55]

The lint check tells me to include utility, but actually it's not needed.
Should I keep it or remove in such case?

[oshima, 2017/07/08 00:47:15]

Will voving to .cc file fix it?

[Jiaquan He, 2017/07/08 01:24:47]

Makes sense. It fixes!

+
 #include "base/macros.h"
 #include "base/strings/string16.h"
 #include "third_party/skia/include/core/SkColor.h"
 #include "ui/app_list/app_list_export.h"
 #include "ui/app_list/views/image_shadow_animator.h"
 #include "ui/views/controls/button/button.h"
 #include "ui/views/controls/button/custom_button.h"
 
 namespace gfx {
 class ImageSkia;
@@ skipping 66 matching lines @@
   views::Label* title_;      // Owned by views hierarchy.
 
   bool selected_ = false;
 
   DISALLOW_COPY_AND_ASSIGN(TileItemView);
 };
 
 }  // namespace app_list
 
 #endif  // UI_APP_LIST_VIEWS_TILE_ITEM_VIEW_H_