Domain Reliability: Include config_version in uploads

components/domain_reliability/context.h

Index: components/domain_reliability/context.h
diff --git a/components/domain_reliability/context.h b/components/domain_reliability/context.h
index 16a3fe457977bfc5d9891a0cdb86f1720ab741c8..c58a22275df6c42e272f1a9902bb89744621c1da 100644
--- a/components/domain_reliability/context.h
+++ b/components/domain_reliability/context.h
@@ -52,7 +52,7 @@ class DOMAIN_RELIABILITY_EXPORT DomainReliabilityContext {
       uint32* successful_requests_out,
       uint32* failed_requests_out) const;
 
-  const DomainReliabilityConfig& config() { return *config_.get(); }
+  const DomainReliabilityConfig& config() const { return *config_.get(); }
 
   // Maximum number of beacons queued per context; if more than this many are
   // queued; the oldest beacons will be removed.