| Index: chrome/browser/page_load_metrics/page_load_metrics_initialize.cc
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| diff --git a/chrome/browser/page_load_metrics/page_load_metrics_initialize.cc b/chrome/browser/page_load_metrics/page_load_metrics_initialize.cc
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| index 093a74a4beea8b68448b552e4cd228a74724bc02..19e9a9f30ad8ff88ebe75e454f8aa84f98c9b11b 100644
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| --- a/chrome/browser/page_load_metrics/page_load_metrics_initialize.cc
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| +++ b/chrome/browser/page_load_metrics/page_load_metrics_initialize.cc
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| @@ -11,6 +11,7 @@
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|  #include "chrome/browser/page_load_metrics/observers/android_page_load_metrics_observer.h"
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|  #endif  // OS_ANDROID
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|  #include "chrome/browser/page_load_metrics/observers/aborts_page_load_metrics_observer.h"
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| +#include "chrome/browser/page_load_metrics/observers/ads_page_load_metrics_observer.h"
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|  #include "chrome/browser/page_load_metrics/observers/amp_page_load_metrics_observer.h"
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|  #include "chrome/browser/page_load_metrics/observers/core_page_load_metrics_observer.h"
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|  #include "chrome/browser/page_load_metrics/observers/css_scanning_page_load_metrics_observer.h"
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| @@ -94,6 +95,10 @@ void PageLoadMetricsEmbedder::RegisterObservers(
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|      tracker->AddObserver(base::MakeUnique<CssScanningMetricsObserver>());
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|      tracker->AddObserver(base::MakeUnique<ProtocolPageLoadMetricsObserver>());
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|      tracker->AddObserver(base::MakeUnique<TabRestorePageLoadMetricsObserver>());
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| +    std::unique_ptr<AdsPageLoadMetricsObserver> ads_observer =
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| +        AdsPageLoadMetricsObserver::CreateIfNeeded();
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| +    if (ads_observer)
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| +      tracker->AddObserver(std::move(ads_observer));
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|  
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|      std::unique_ptr<page_load_metrics::PageLoadMetricsObserver> ukm_observer =
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|          UkmPageLoadMetricsObserver::CreateIfNeeded(web_contents_);
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| 
 |