Showing previews UI for Offline Previews

chrome/browser/page_load_metrics/observers/previews_page_load_metrics_observer.cc

 // 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.
 
 #include "chrome/browser/page_load_metrics/observers/previews_page_load_metrics_observer.h"
 
 #include <string>
 
 #include "base/optional.h"
 #include "base/time/time.h"
+#include "chrome/browser/loader/chrome_navigation_data.h"
 #include "chrome/browser/page_load_metrics/page_load_metrics_util.h"
 #include "chrome/common/features.h"
 #include "chrome/common/page_load_metrics/page_load_timing.h"
+#include "components/offline_pages/loaded_offline_page_info.h"
 #include "content/public/browser/navigation_handle.h"
 #include "content/public/browser/web_contents.h"
 
-#if BUILDFLAG(ANDROID_JAVA_UI)
-#include "chrome/browser/android/offline_pages/offline_page_tab_helper.h"
-#endif  // BUILDFLAG(ANDROID_JAVA_UI)
-
 namespace previews {
 
 namespace internal {
 
 const char kHistogramOfflinePreviewsDOMContentLoadedEventFired[] =
     "PageLoad.Clients.Previews.OfflinePages.DocumentTiming."
     "NavigationToDOMContentLoadedEventFired";
 const char kHistogramOfflinePreviewsFirstLayout[] =
     "PageLoad.Clients.Previews.OfflinePages.DocumentTiming."
     "NavigationToFirstLayout";
 const char kHistogramOfflinePreviewsLoadEventFired[] =
     "PageLoad.Clients.Previews.OfflinePages.DocumentTiming."
     "NavigationToLoadEventFired";
 const char kHistogramOfflinePreviewsFirstContentfulPaint[] =
     "PageLoad.Clients.Previews.OfflinePages.PaintTiming."
     "NavigationToFirstContentfulPaint";
 const char kHistogramOfflinePreviewsParseStart[] =
     "PageLoad.Clients.Previews.OfflinePages.ParseTiming.NavigationToParseStart";
 
 }  // namespace internal
 
 PreviewsPageLoadMetricsObserver::PreviewsPageLoadMetricsObserver() {}
 
 PreviewsPageLoadMetricsObserver::~PreviewsPageLoadMetricsObserver() {}
 
 page_load_metrics::PageLoadMetricsObserver::ObservePolicy
 PreviewsPageLoadMetricsObserver::OnCommit(
     content::NavigationHandle* navigation_handle) {
-  return IsOfflinePreview(navigation_handle->GetWebContents())
-             ? CONTINUE_OBSERVING
-             : STOP_OBSERVING;
+  ChromeNavigationData* chrome_navigation_data =
+      ChromeNavigationData::GetForNavigationHandle(navigation_handle);
+  if (!chrome_navigation_data)
+    return STOP_OBSERVING;
+  offline_pages::LoadedOfflinePageInfo* info =
+      chrome_navigation_data->GetLoadedOfflinePageInfo();
+  return info && info->is_offline_preview() ? CONTINUE_OBSERVING
+                                            : STOP_OBSERVING;
 }
 
 void PreviewsPageLoadMetricsObserver::OnDomContentLoadedEventStart(
     const page_load_metrics::PageLoadTiming& timing,
     const page_load_metrics::PageLoadExtraInfo& info) {
   if (!WasStartedInForegroundOptionalEventInForeground(
           timing.dom_content_loaded_event_start, info)) {
     return;
   }
   PAGE_LOAD_HISTOGRAM(
@@ skipping 38 matching lines @@
     const page_load_metrics::PageLoadTiming& timing,
     const page_load_metrics::PageLoadExtraInfo& info) {
   if (!WasStartedInForegroundOptionalEventInForeground(
           timing.dom_content_loaded_event_start, info)) {
     return;
   }
   PAGE_LOAD_HISTOGRAM(internal::kHistogramOfflinePreviewsParseStart,
                       timing.parse_start.value());
 }
 
-bool PreviewsPageLoadMetricsObserver::IsOfflinePreview(
-    content::WebContents* web_contents) const {
-#if BUILDFLAG(ANDROID_JAVA_UI)
-  offline_pages::OfflinePageTabHelper* tab_helper =
-      offline_pages::OfflinePageTabHelper::FromWebContents(web_contents);
-  return tab_helper && tab_helper->is_offline_preview();
-#else
-  return false;
-#endif  // BUILDFLAG(ANDROID_JAVA_UI)
-}
-
 }  // namespace previews