Add a way to send the resource percentage signal to the RC.

chrome/browser/page_load_metrics/page_load_metrics_initialize.cc

 // Copyright 2015 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/page_load_metrics_initialize.h"
 
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
+#if defined(OS_ANDROID)
+#include "chrome/browser/android/offline_pages/request_coordinator_factory.h"
+#endif
 #include "chrome/browser/page_load_metrics/metrics_web_contents_observer.h"
 #if defined(OS_ANDROID)
 #include "chrome/browser/page_load_metrics/observers/android_page_load_metrics_observer.h"
 #endif  // OS_ANDROID
 #include "chrome/browser/page_load_metrics/observers/aborts_page_load_metrics_observer.h"
 #include "chrome/browser/page_load_metrics/observers/ads_page_load_metrics_observer.h"
 #include "chrome/browser/page_load_metrics/observers/amp_page_load_metrics_observer.h"
 #include "chrome/browser/page_load_metrics/observers/core_page_load_metrics_observer.h"
 #include "chrome/browser/page_load_metrics/observers/css_scanning_page_load_metrics_observer.h"
 #include "chrome/browser/page_load_metrics/observers/data_reduction_proxy_metrics_observer.h"
 #include "chrome/browser/page_load_metrics/observers/delay_navigation_page_load_metrics_observer.h"
 #include "chrome/browser/page_load_metrics/observers/document_write_page_load_metrics_observer.h"
 #include "chrome/browser/page_load_metrics/observers/from_gws_page_load_metrics_observer.h"
 #include "chrome/browser/page_load_metrics/observers/google_captcha_observer.h"
 #include "chrome/browser/page_load_metrics/observers/https_engagement_metrics/https_engagement_page_load_metrics_observer.h"
 #include "chrome/browser/page_load_metrics/observers/lofi_page_load_metrics_observer.h"
 #include "chrome/browser/page_load_metrics/observers/media_page_load_metrics_observer.h"
 #include "chrome/browser/page_load_metrics/observers/no_state_prefetch_page_load_metrics_observer.h"
 #include "chrome/browser/page_load_metrics/observers/omnibox_suggestion_used_page_load_metrics_observer.h"
 #include "chrome/browser/page_load_metrics/observers/prerender_page_load_metrics_observer.h"
 #include "chrome/browser/page_load_metrics/observers/previews_page_load_metrics_observer.h"
 #include "chrome/browser/page_load_metrics/observers/protocol_page_load_metrics_observer.h"
 #include "chrome/browser/page_load_metrics/observers/resource_prefetch_predictor_page_load_metrics_observer.h"
+#include "chrome/browser/page_load_metrics/observers/resource_tracking_page_load_metrics_observer.h"
 #include "chrome/browser/page_load_metrics/observers/service_worker_page_load_metrics_observer.h"
 #include "chrome/browser/page_load_metrics/observers/subresource_filter_metrics_observer.h"
 #include "chrome/browser/page_load_metrics/observers/tab_restore_page_load_metrics_observer.h"
 #include "chrome/browser/page_load_metrics/observers/ukm_page_load_metrics_observer.h"
 #include "chrome/browser/page_load_metrics/page_load_metrics_embedder_interface.h"
 #include "chrome/browser/page_load_metrics/page_load_tracker.h"
 #include "chrome/browser/prerender/prerender_contents.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/search/search.h"
+#include "components/offline_pages/core/background/request_coordinator.h"
+#include "components/offline_pages/features/features.h"
 #include "components/rappor/rappor_service_impl.h"
 #include "content/public/browser/web_contents.h"
 #include "url/gurl.h"
 
 namespace chrome {
 
 namespace {
 
 class PageLoadMetricsEmbedder
     : public page_load_metrics::PageLoadMetricsEmbedderInterface {
  public:
-  explicit PageLoadMetricsEmbedder(content::WebContents* web_contents);
+  explicit PageLoadMetricsEmbedder(content::WebContents* web_contents,
+                                   bool background_rendering);
   ~PageLoadMetricsEmbedder() override;
 
   // page_load_metrics::PageLoadMetricsEmbedderInterface:
   bool IsNewTabPageUrl(const GURL& url) override;
   void RegisterObservers(page_load_metrics::PageLoadTracker* tracker) override;
 
  private:
   bool IsPrerendering() const;
 
   content::WebContents* const web_contents_;
+  // true  when rendering in the background, such as creating an offline page.
+  bool background_rendering_;
 
   DISALLOW_COPY_AND_ASSIGN(PageLoadMetricsEmbedder);
 };
 
 PageLoadMetricsEmbedder::PageLoadMetricsEmbedder(
-    content::WebContents* web_contents)
-    : web_contents_(web_contents) {}
+    content::WebContents* web_contents,
+    bool background_rendering)
+    : web_contents_(web_contents),
+      background_rendering_(background_rendering) {}
 
 PageLoadMetricsEmbedder::~PageLoadMetricsEmbedder() {}
 
 void PageLoadMetricsEmbedder::RegisterObservers(
     page_load_metrics::PageLoadTracker* tracker) {
-  if (!IsPrerendering()) {
+  if (!IsPrerendering() && !background_rendering_) {
     tracker->AddObserver(base::MakeUnique<AbortsPageLoadMetricsObserver>());
     tracker->AddObserver(base::MakeUnique<AMPPageLoadMetricsObserver>());
     tracker->AddObserver(base::MakeUnique<CorePageLoadMetricsObserver>());
     tracker->AddObserver(
         base::MakeUnique<
             data_reduction_proxy::DataReductionProxyMetricsObserver>());
     tracker->AddObserver(
         base::MakeUnique<data_reduction_proxy::LoFiPageLoadMetricsObserver>());
     tracker->AddObserver(base::MakeUnique<FromGWSPageLoadMetricsObserver>());
     tracker->AddObserver(
@@ skipping 42 matching lines @@
     std::unique_ptr<page_load_metrics::PageLoadMetricsObserver>
         prerender_observer =
             PrerenderPageLoadMetricsObserver::CreateIfNeeded(web_contents_);
     if (prerender_observer)
       tracker->AddObserver(std::move(prerender_observer));
   }
   tracker->AddObserver(
       base::MakeUnique<OmniboxSuggestionUsedMetricsObserver>(IsPrerendering()));
   tracker->AddObserver(
       base::MakeUnique<DelayNavigationPageLoadMetricsObserver>());
+#if BUILDFLAG(ENABLE_OFFLINE_PAGES)
+  if (background_rendering_) {
+    offline_pages::RequestCoordinator* request_coordinator =
+        offline_pages::RequestCoordinatorFactory::GetForBrowserContext(
+            web_contents_->GetBrowserContext());
+    if (request_coordinator) {
+      tracker->AddObserver(
+          base::MakeUnique<
+              page_load_metrics::ResourceTrackingPageLoadMetricsObserver>(
+              request_coordinator));
+    }
+  }
+#endif  // ENABLE_OFFLINE_PAGES
 }
 
 bool PageLoadMetricsEmbedder::IsPrerendering() const {
   return prerender::PrerenderContents::FromWebContents(web_contents_) !=
          nullptr;
 }
 
 bool PageLoadMetricsEmbedder::IsNewTabPageUrl(const GURL& url) {
   Profile* profile =
       Profile::FromBrowserContext(web_contents_->GetBrowserContext());
   if (!profile)
     return false;
   return search::IsInstantNTPURL(url, profile);
 }
 
 }  // namespace
 
-void InitializePageLoadMetricsForWebContents(
-    content::WebContents* web_contents) {
+void InitializePageLoadMetricsForWebContents(content::WebContents* web_contents,
+                                             bool background_rendering) {
   page_load_metrics::MetricsWebContentsObserver::CreateForWebContents(
-      web_contents, base::MakeUnique<PageLoadMetricsEmbedder>(web_contents));
+      web_contents, base::MakeUnique<PageLoadMetricsEmbedder>(
+                        web_contents, background_rendering));
 }
 
 }  // namespace chrome