chromium/chrome/browser/ui/performance_controls/memory_saver_chip_tab_helper.h

// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CHROME_BROWSER_UI_PERFORMANCE_CONTROLS_MEMORY_SAVER_CHIP_TAB_HELPER_H_
#define CHROME_BROWSER_UI_PERFORMANCE_CONTROLS_MEMORY_SAVER_CHIP_TAB_HELPER_H_

#include "chrome/browser/resource_coordinator/lifecycle_unit_state.mojom-shared.h"
#include "components/prefs/pref_service.h"
#include "content/public/browser/navigation_handle.h"
#include "content/public/browser/render_widget_host.h"
#include "content/public/browser/web_contents_observer.h"
#include "content/public/browser/web_contents_user_data.h"

namespace memory_saver {
enum class ChipState { … };
}  // namespace memory_saver

// When a page in the background has been discarded due to memory saver mode,
// and the user returns to that tab, a page action chip should be shown to the
// user which conveys information about the discarded tab to the user.
// The MemorySaverChipTabHelper is a per-tab class which manages the state of
// the memory saver chip.
class MemorySaverChipTabHelper
    : public content::WebContentsObserver,
      public content::WebContentsUserData<MemorySaverChipTabHelper> { … };

#endif  // CHROME_BROWSER_UI_PERFORMANCE_CONTROLS_MEMORY_SAVER_CHIP_TAB_HELPER_H_