blob: 1735bb197320de9601ca98f12956d42f26d146e5 [file] [log] [blame]
// Copyright (c) 2012 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.
#include "base/macros.h"
#include "content/public/renderer/render_view_observer.h"
namespace blink {
class WebDataSource;
namespace content {
class DocumentState;
class PageLoadHistograms : public content::RenderViewObserver {
explicit PageLoadHistograms(content::RenderView* render_view);
~PageLoadHistograms() override;
// RenderViewObserver implementation.
void FrameWillClose(blink::WebFrame* frame) override;
void ClosePage() override;
void OnDestruct() override;
// Dump all page load histograms appropriate for the given frame.
// This method will only dump once-per-instance, so it is safe to call
// multiple times.
// The time points we keep are
// request: time document was requested by user
// start: time load of document started
// commit: time load of document started
// finish_document: main document loaded, before onload()
// finish_all_loads: after onload() and all resources are loaded
// first_paint: first paint performed
// first_paint_after_load: first paint performed after load is finished
// begin: request if it was user requested, start otherwise
// It's possible for the request time not to be set, if a client
// redirect had been done (the user never requested the page)
// Also, it's possible to load a page without ever laying it out
// so first_paint and first_paint_after_load can be 0.
void Dump(blink::WebFrame* frame);
void LogPageLoadTime(const content::DocumentState* load_times,
const blink::WebDataSource* ds) const;