customtabs: Send time to first contentful paint to the caller.

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/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/core_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/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/service_worker_page_load_metrics_observer.h"
 #include "chrome/browser/page_load_metrics/observers/stale_while_revalidate_metrics_observer.h"
 #include "chrome/browser/prerender/prerender_contents.h"
@@ skipping 44 matching lines @@
   // TODO(ricea): Remove this in April 2016 or before. crbug.com/348877
   tracker->AddObserver(
       base::WrapUnique(new chrome::StaleWhileRevalidateMetricsObserver()));
   tracker->AddObserver(
       base::WrapUnique(new DocumentWritePageLoadMetricsObserver()));
   tracker->AddObserver(
       base::WrapUnique(new ServiceWorkerPageLoadMetricsObserver()));
   tracker->AddObserver(
       base::WrapUnique(new HttpsEngagementPageLoadMetricsObserver(
           web_contents_->GetBrowserContext())));
+#if defined(OS_ANDROID)
+  tracker->AddObserver(
+      base::WrapUnique(new AndroidPageLoadMetricsObserver(web_contents_)));
+#endif  // OS_ANDROID
 }
 
 bool PageLoadMetricsEmbedder::IsPrerendering(
     content::WebContents* web_contents) {
   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) {
   page_load_metrics::MetricsWebContentsObserver::CreateForWebContents(
       web_contents,
       base::WrapUnique(new PageLoadMetricsEmbedder(web_contents)));
 }
 
 }  // namespace chrome