chromium/chrome/browser/resource_coordinator/tab_manager.cc

// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/40285824): Remove this and convert code to safer constructs.
#pragma allow_unsafe_buffers
#endif

#include "chrome/browser/resource_coordinator/tab_manager.h"

#include <stddef.h>

#include <algorithm>
#include <memory>
#include <set>
#include <string>
#include <utility>

#include "base/feature_list.h"
#include "base/functional/bind.h"
#include "base/functional/callback_helpers.h"
#include "base/memory/memory_pressure_monitor.h"
#include "base/memory/raw_ptr.h"
#include "base/metrics/field_trial.h"
#include "base/metrics/histogram_macros.h"
#include "base/process/process.h"
#include "base/rand_util.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_util.h"
#include "base/strings/utf_string_conversions.h"
#include "base/system/sys_info.h"
#include "base/threading/thread.h"
#include "base/time/time.h"
#include "base/trace_event/trace_event.h"
#include "base/trace_event/traced_value.h"
#include "build/build_config.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/media/webrtc/media_capture_devices_dispatcher.h"
#include "chrome/browser/media/webrtc/media_stream_capture_indicator.h"
#include "chrome/browser/memory/oom_memory_details.h"
#include "chrome/browser/resource_coordinator/resource_coordinator_parts.h"
#include "chrome/browser/resource_coordinator/tab_lifecycle_unit_external.h"
#include "chrome/browser/resource_coordinator/tab_manager_features.h"
#include "chrome/browser/resource_coordinator/tab_manager_resource_coordinator_signal_observer.h"
#include "chrome/browser/resource_coordinator/time.h"
#include "chrome/browser/sessions/session_restore.h"
#include "chrome/browser/ui/browser.h"
#include "chrome/browser/ui/browser_list.h"
#include "chrome/browser/ui/browser_window.h"
#include "chrome/browser/ui/tab_contents/tab_contents_iterator.h"
#include "chrome/browser/ui/tab_ui_helper.h"
#include "chrome/browser/ui/tabs/tab_strip_model.h"
#include "chrome/browser/ui/tabs/tab_utils.h"
#include "chrome/common/chrome_constants.h"
#include "chrome/common/chrome_features.h"
#include "chrome/common/url_constants.h"
#include "components/performance_manager/public/features.h"
#include "components/performance_manager/public/graph/graph.h"
#include "components/performance_manager/public/performance_manager.h"
#include "components/variations/variations_associated_data.h"
#include "content/public/browser/browser_task_traits.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/favicon_status.h"
#include "content/public/browser/navigation_controller.h"
#include "content/public/browser/navigation_entry.h"
#include "content/public/browser/navigation_handle.h"
#include "content/public/browser/render_frame_host.h"
#include "content/public/browser/render_process_host.h"
#include "content/public/browser/web_contents.h"
#include "content/public/common/content_features.h"
#include "net/base/network_change_notifier.h"

TimeTicks;
BrowserThread;
WebContents;

namespace resource_coordinator {
namespace {

LoadingState;

}  // namespace

////////////////////////////////////////////////////////////////////////////////
// TabManager

class TabManager::TabManagerSessionRestoreObserver final
    : public SessionRestoreObserver {};

TabManager::TabManager() {}

TabManager::~TabManager() = default;

void TabManager::Start() {}

LifecycleUnitVector TabManager::GetSortedLifecycleUnits() {}

void TabManager::DiscardTab(LifecycleUnitDiscardReason reason,
                            TabDiscardDoneCB tab_discard_done) {}

WebContents* TabManager::DiscardTabByExtension(content::WebContents* contents) {}

void TabManager::AddObserver(TabLifecycleObserver* observer) {}

void TabManager::RemoveObserver(TabLifecycleObserver* observer) {}

///////////////////////////////////////////////////////////////////////////////
// TabManager, private:

// static
bool TabManager::IsInternalPage(const GURL& url) {}

// TODO(jamescook): This should consider tabs with references to other tabs,
// such as tabs created with JavaScript window.open(). Potentially consider
// discarding the entire set together, or use that in the priority computation.
content::WebContents* TabManager::DiscardTabImpl(
    LifecycleUnitDiscardReason reason,
    TabDiscardDoneCB tab_discard_done) {}

void TabManager::OnWillRestoreTab(WebContents* contents) {}

void TabManager::OnLifecycleUnitDestroyed(LifecycleUnit* lifecycle_unit) {}

void TabManager::OnLifecycleUnitCreated(LifecycleUnit* lifecycle_unit) {}

}  // namespace resource_coordinator