Initialize unintialized field.

content/public/common/resource_response_info.cc

Index: content/public/common/resource_response_info.cc
diff --git a/content/public/common/resource_response_info.cc b/content/public/common/resource_response_info.cc
index cffb7dbbf3447066b37c49990a88544ee62028d8..872f1ba696809f43bb788fa017b9f30e1961e57e 100644
--- a/content/public/common/resource_response_info.cc
+++ b/content/public/common/resource_response_info.cc
@@ -28,7 +28,8 @@ ResourceResponseInfo::ResourceResponseInfo()
       is_using_lofi(false),
       effective_connection_type(net::EFFECTIVE_CONNECTION_TYPE_UNKNOWN),
       cert_status(0),
-      ssl_connection_status(0) {}
+      ssl_connection_status(0),
+      ssl_key_exchange_group(0) {}
 
 ResourceResponseInfo::ResourceResponseInfo(const ResourceResponseInfo& other) =
     default;