Fix remaining incompatibilities between scoped_ptr and unique_ptr.

chrome/browser/extensions/api/gcd_private/privet_v3_session.cc

Index: chrome/browser/extensions/api/gcd_private/privet_v3_session.cc
diff --git a/chrome/browser/extensions/api/gcd_private/privet_v3_session.cc b/chrome/browser/extensions/api/gcd_private/privet_v3_session.cc
index e7f8fd160b7973b8f7e64187587d8156d75e2596..6074cd87b71e7eb56ec497bd495b2d948cace4eb 100644
--- a/chrome/browser/extensions/api/gcd_private/privet_v3_session.cc
+++ b/chrome/browser/extensions/api/gcd_private/privet_v3_session.cc
@@ -159,7 +159,7 @@ void PrivetV3Session::FetcherDelegate::OnURLFetchComplete(
   }
 
   bool has_error = value->HasKey(kPrivetV3KeyError);
-  LOG_IF(ERROR, has_error) << "Response: " << value;
+  LOG_IF(ERROR, has_error) << "Response: " << value.get();
   ReplyAndDestroyItself(
       has_error ? Result::STATUS_DEVICEERROR : Result::STATUS_SUCCESS, *value);
 }