Clean up DownloadAttribution Finch experiments

chrome/browser/safe_browsing/safe_browsing_navigation_observer.cc

Index: chrome/browser/safe_browsing/safe_browsing_navigation_observer.cc
diff --git a/chrome/browser/safe_browsing/safe_browsing_navigation_observer.cc b/chrome/browser/safe_browsing/safe_browsing_navigation_observer.cc
index dc296f1574d22d4afec82ab106e0d626b23654a4..eee146552769e95511cd86e385e5bd592ae5d9fa 100644
--- a/chrome/browser/safe_browsing/safe_browsing_navigation_observer.cc
+++ b/chrome/browser/safe_browsing/safe_browsing_navigation_observer.cc
@@ -7,7 +7,6 @@
 #include "base/memory/ptr_util.h"
 #include "base/time/time.h"
 #include "chrome/browser/browser_process.h"
-#include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/safe_browsing/safe_browsing_navigation_observer_manager.h"
 #include "chrome/browser/safe_browsing/safe_browsing_service.h"
 #include "chrome/browser/sessions/session_tab_helper.h"
@@ -76,7 +75,7 @@ void SafeBrowsingNavigationObserver::MaybeCreateForWebContents(
     return;
 
   if (safe_browsing::SafeBrowsingNavigationObserverManager::IsEnabledAndReady(
-        Profile::FromBrowserContext(web_contents->GetBrowserContext()))) {
+          web_contents)) {
     web_contents->SetUserData(
         kWebContentsUserDataKey,
         new SafeBrowsingNavigationObserver(