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| 1 // Copyright 2015 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 COMPONENTS_PAGE_LOAD_METRICS_BROWSER_PAGE_LOAD_METRICS_WEB_CONTENTS_OBSE
RVER_H_ |
| 6 #define COMPONENTS_PAGE_LOAD_METRICS_BROWSER_PAGE_LOAD_METRICS_WEB_CONTENTS_OBSE
RVER_H_ |
| 7 |
| 8 #include "base/macros.h" |
| 9 #include "base/time/time.h" |
| 10 #include "components/page_load_metrics/common/page_load_timing.h" |
| 11 #include "content/public/browser/web_contents.h" |
| 12 #include "content/public/browser/web_contents_observer.h" |
| 13 #include "content/public/browser/web_contents_user_data.h" |
| 14 |
| 15 namespace content { |
| 16 class NavigationHandle; |
| 17 class RenderFrameHost; |
| 18 } // namespace content |
| 19 |
| 20 namespace IPC { |
| 21 class Message; |
| 22 } // namespace IPC |
| 23 |
| 24 namespace page_load_metrics { |
| 25 |
| 26 // MetricsWebContentsObserver logs page load UMA metrics based on |
| 27 // IPC messages received from a MetricsRenderFrameObserver. |
| 28 class MetricsWebContentsObserver |
| 29 : public content::WebContentsObserver, |
| 30 public content::WebContentsUserData<MetricsWebContentsObserver> { |
| 31 public: |
| 32 ~MetricsWebContentsObserver() override; |
| 33 |
| 34 // content::WebContentsObserver implementation: |
| 35 bool OnMessageReceived(const IPC::Message& message, |
| 36 content::RenderFrameHost* render_frame_host) override; |
| 37 void DidCommitNavigation( |
| 38 content::NavigationHandle* navigation_handle) override; |
| 39 void RenderProcessGone(base::TerminationStatus status) override; |
| 40 |
| 41 private: |
| 42 explicit MetricsWebContentsObserver(content::WebContents* web_contents); |
| 43 friend class content::WebContentsUserData<MetricsWebContentsObserver>; |
| 44 friend class MetricsWebContentsObserverTest; |
| 45 |
| 46 void OnTimingUpdated(content::RenderFrameHost*, const PageLoadTiming& timing); |
| 47 void RecordTimingHistograms(); |
| 48 |
| 49 bool IsRelevantNavigation(content::NavigationHandle* navigation_handle); |
| 50 |
| 51 // Will be null before any navigations have committed. When a navigation |
| 52 // commits we will initialize this as empty. |
| 53 scoped_ptr<PageLoadTiming> current_timing_; |
| 54 |
| 55 DISALLOW_COPY_AND_ASSIGN(MetricsWebContentsObserver); |
| 56 }; |
| 57 |
| 58 } // namespace page_load_metrics |
| 59 |
| 60 #endif // COMPONENTS_PAGE_LOAD_METRICS_BROWSER_PAGE_LOAD_METRICS_WEB_CONTENTS_O
BSERVER_H_ |
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