| // Copyright 2016 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. |
| |
| #ifndef CHROME_BROWSER_PAGE_LOAD_METRICS_METRICS_NAVIGATION_THROTTLE_H_ |
| #define CHROME_BROWSER_PAGE_LOAD_METRICS_METRICS_NAVIGATION_THROTTLE_H_ |
| |
| #include <memory> |
| |
| #include "base/macros.h" |
| #include "content/public/browser/navigation_throttle.h" |
| |
| namespace page_load_metrics { |
| |
| // This class is used to forward calls to the MetricsWebContentsObserver. |
| // Namely, WillStartRequest() is called on NavigationThrottles, but not on |
| // WebContentsObservers. Data from the NavigationHandle accessed at this point |
| // is used to obtain more reliable abort metrics (like page transition type). |
| class MetricsNavigationThrottle : public content::NavigationThrottle { |
| public: |
| static std::unique_ptr<content::NavigationThrottle> Create( |
| content::NavigationHandle* handle); |
| ~MetricsNavigationThrottle() override; |
| |
| // content::NavigationThrottle: |
| content::NavigationThrottle::ThrottleCheckResult WillStartRequest() override; |
| content::NavigationThrottle::ThrottleCheckResult WillProcessResponse() |
| override; |
| const char* GetNameForLogging() override; |
| |
| private: |
| explicit MetricsNavigationThrottle(content::NavigationHandle* handle); |
| |
| DISALLOW_COPY_AND_ASSIGN(MetricsNavigationThrottle); |
| }; |
| |
| } // namespace page_load_metrics |
| |
| #endif // CHROME_BROWSER_PAGE_LOAD_METRICS_METRICS_NAVIGATION_THROTTLE_H_ |