diff --git a/third_party/protobuf/3.2.0/js/test2.proto b/third_party/protobuf/3.2.0/js/test2.proto
new file mode 100644
index 0000000..b67f93f
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+++ b/third_party/protobuf/3.2.0/js/test2.proto
@@ -0,0 +1,60 @@
+// Protocol Buffers - Google's data interchange format
+// Copyright 2008 Google Inc.  All rights reserved.
+// https://developers.google.com/protocol-buffers/
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+syntax = "proto2";
+
+option java_package = "com.google.apps.jspb.proto";
+option java_multiple_files = true;
+
+package jspb.test;
+
+import "test.proto";
+
+message TestExtensionsMessage {
+  optional int32 intfield = 1;
+  extensions 100 to max;
+}
+
+message ExtensionMessage {
+  extend TestExtensionsMessage {
+    optional ExtensionMessage ext_field = 100;
+  }
+  optional string ext1 = 1;
+}
+
+// Floating extensions are only supported when generating a _lib.js library.
+extend TestExtensionsMessage {
+  optional ExtensionMessage floating_msg_field = 101;
+  optional string floating_str_field = 102;
+}
+
+message ForeignNestedFieldMessage {
+  optional Deeply.Nested.Message deeply_nested_message = 1;
+}