OLD | NEW |
---|---|
(Empty) | |
1 // Copyright 2016 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_PAGE_LOAD_METRICS_METRICS_NAVIGATION_THROTTLE_H_ | |
6 #define CHROME_BROWSER_PAGE_LOAD_METRICS_METRICS_NAVIGATION_THROTTLE_H_ | |
7 | |
8 #include <memory> | |
9 | |
10 #include "base/macros.h" | |
11 #include "content/public/browser/navigation_throttle.h" | |
12 | |
13 namespace page_load_metrics { | |
14 | |
15 // This class is used to forward calls to the MetricsWebContentsObserver. | |
16 // Namely, WillStartRequest() is called on NavigationThrottles, but not on | |
17 // WebContentsObservers. Data from the NavigationHandle accessed at this point | |
18 // is used to obtain more reliable abort metrics (like page transition type). | |
nasko
2016/08/01 15:29:22
Based on some poking I've done on separate CLs I'v
Charlie Harrison
2016/08/01 17:42:19
It is generally correct. There are some gotchas ar
| |
19 class MetricsNavigationThrottle : public content::NavigationThrottle { | |
20 public: | |
21 static std::unique_ptr<content::NavigationThrottle> Create( | |
22 content::NavigationHandle* handle); | |
23 ~MetricsNavigationThrottle() override; | |
24 | |
25 // content::NavigationThrottle: | |
26 content::NavigationThrottle::ThrottleCheckResult WillStartRequest() override; | |
27 | |
28 private: | |
29 explicit MetricsNavigationThrottle(content::NavigationHandle* handle); | |
30 | |
31 DISALLOW_COPY_AND_ASSIGN(MetricsNavigationThrottle); | |
32 }; | |
33 | |
34 } // namespace page_load_metrics | |
35 | |
36 #endif // CHROME_BROWSER_PAGE_LOAD_METRICS_METRICS_NAVIGATION_THROTTLE_H_ | |
OLD | NEW |