Merge commit '36bca61764984ff5395653cf8377ec5daa71b709' as 'libs/protobuf'

libs/protobuf/php/tests/proto/test_no_namespace.proto

@@ -0,0 +1,22 @@
+syntax = "proto3";
+
+option php_metadata_namespace = "\\";
+
+message NoNamespaceMessage {
+  int32 a = 1;
+
+  // Test nested messages, enums, and reserved names
+  NestedMessage nested_message = 2;
+  NestedEnum nested_enum = 3;
+  message NestedMessage {
+    int32 a = 1;
+  }
+  enum NestedEnum {
+      ZERO = 0;
+  };
+}
+
+enum NoNamespaceEnum {
+  VALUE_A = 0;
+  VALUE_B = 1;
+}