Update SupportsUserData uses with unique_ptr.

chrome/browser/data_use_measurement/data_use_web_contents_observer.cc

Index: chrome/browser/data_use_measurement/data_use_web_contents_observer.cc
diff --git a/chrome/browser/data_use_measurement/data_use_web_contents_observer.cc b/chrome/browser/data_use_measurement/data_use_web_contents_observer.cc
index 9d20afa48083ab17068573a7cc581b8e3244954b..91170f23fdfdbf10532bc1cbfcb19db4b6e7b93a 100644
--- a/chrome/browser/data_use_measurement/data_use_web_contents_observer.cc
+++ b/chrome/browser/data_use_measurement/data_use_web_contents_observer.cc
@@ -4,6 +4,7 @@
 
 #include "chrome/browser/data_use_measurement/data_use_web_contents_observer.h"
 
+#include "base/memory/ptr_util.h"
 #include "chrome/browser/data_use_measurement/chrome_data_use_ascriber_service.h"
 #include "chrome/browser/data_use_measurement/chrome_data_use_ascriber_service_factory.h"
 #include "content/public/browser/navigation_handle.h"
@@ -34,7 +35,8 @@ void DataUseWebContentsObserver::CreateForWebContents(
   // tied to a profile. Since profiles outlive |WebContents|, |service| will
   // outlive |DataUseWebContentsObserver|.
   web_contents->SetUserData(
-      UserDataKey(), new DataUseWebContentsObserver(web_contents, service));
+      UserDataKey(),
+      base::WrapUnique(new DataUseWebContentsObserver(web_contents, service)));
 }
 
 DataUseWebContentsObserver::DataUseWebContentsObserver(