1// Copyright (c) 2012 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#ifndef CHROME_BROWSER_PRERENDER_PRERENDER_CONFIG_H_
6#define CHROME_BROWSER_PRERENDER_PRERENDER_CONFIG_H_
7
8#include <string>
9
10#include "base/time/time.h"
11#include "ui/gfx/rect.h"
12
13namespace prerender {
14
15struct Config {
16  Config();
17  ~Config();
18
19  // Maximum memory use for a prerendered page until it is killed.
20  size_t max_bytes;
21
22  // Number of simultaneous prerender pages from link elements allowed. Enforced
23  // by PrerenderLinkManager.
24  size_t max_link_concurrency;
25
26  // Number of simultaneous prerender pages from link elements allowed per
27  // launching page. Enforced by PrerenderLinkManager.
28  size_t max_link_concurrency_per_launcher;
29
30  // Is rate limiting enabled?
31  bool rate_limit_enabled;
32
33  // The maximum time that a prerender can wait for launch in the
34  // PrerenderLinkManager.
35  base::TimeDelta max_wait_to_launch;
36
37  // The default time to live of a newly created prerender. May be shortened to
38  // abandon_time_to_live, below.
39  base::TimeDelta time_to_live;
40
41  // After a prerender has been abandoned by the user navigating away from the
42  // source page or otherwise mooting the launcher, how long until the prerender
43  // should be removed. This exists because a prerendered page is often
44  // navigated to through a chain of redirects; removing the prerender when the
45  // link element is removed because of navigation would destroy prerenders just
46  // before they were going to be used.
47  base::TimeDelta abandon_time_to_live;
48
49  // The default tab bounds used as the prerenderer tab size when the active tab
50  // cannot be accessed.
51  gfx::Rect default_tab_bounds;
52
53  // User agent being used as an override for the WebContents.
54  std::string user_agent_override;
55
56  // Is the user agent being overridden for this NavigationEntry?
57  bool is_overriding_user_agent;
58};
59
60}  // namespace prerender
61
62#endif  // CHROME_BROWSER_PRERENDER_PRERENDER_CONFIG_H_
63
64