chromium/chrome/browser/performance_manager/observers/page_load_metrics_observer.cc

// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "chrome/browser/performance_manager/observers/page_load_metrics_observer.h"

#include "base/metrics/histogram_functions.h"
#include "build/build_config.h"
#include "chrome/browser/preloading/prefetch/no_state_prefetch/no_state_prefetch_manager_factory.h"
#include "components/no_state_prefetch/browser/no_state_prefetch_manager.h"
#include "components/performance_manager/public/performance_manager.h"
#include "content/public/browser/navigation_handle.h"
#include "content/public/browser/visibility.h"
#include "content/public/browser/web_contents_observer.h"
#include "content/public/browser/web_contents_user_data.h"
#include "extensions/buildflags/buildflags.h"
#include "services/metrics/public/cpp/metrics_utils.h"
#include "services/metrics/public/cpp/ukm_builders.h"
#include "services/metrics/public/cpp/ukm_recorder.h"
#include "services/metrics/public/cpp/ukm_source_id.h"

#if BUILDFLAG(ENABLE_EXTENSIONS)
#include "extensions/browser/process_manager.h"
#endif

#if BUILDFLAG(IS_ANDROID)
#include "chrome/browser/android/tab_android.h"
#else
#include "chrome/browser/devtools/devtools_window.h"
#include "chrome/browser/ui/browser_finder.h"
#endif

namespace performance_manager {

namespace …  // namespace

PageLoadMetricsObserver::PageLoadMetricsObserver() { … }

PageLoadMetricsObserver::~PageLoadMetricsObserver() { … }

void PageLoadMetricsObserver::OnPageNodeCreatedForWebContents(
    content::WebContents* web_contents) { … }

}  // namespace performance_manager