Update //third_party/protobuf to version 3.

third_party/protobuf/js/node_loader.js

Index: third_party/protobuf/js/node_loader.js
diff --git a/third_party/protobuf/src/google/protobuf/service.cc b/third_party/protobuf/js/node_loader.js
similarity index 76%
copy from third_party/protobuf/src/google/protobuf/service.cc
copy to third_party/protobuf/js/node_loader.js
index caf968ca5b4d46115c87a504b6a09d1358356884..79211adda49a325ad64d80e1227617bfb9aef5ba 100644
--- a/third_party/protobuf/src/google/protobuf/service.cc
+++ b/third_party/protobuf/js/node_loader.js
@@ -1,6 +1,6 @@
 // Protocol Buffers - Google's data interchange format
 // Copyright 2008 Google Inc.  All rights reserved.
-// http://code.google.com/p/protobuf/
+// 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
@@ -28,19 +28,22 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-// Author: kenton@google.com (Kenton Varda)
-//  Based on original Protocol Buffers design by
-//  Sanjay Ghemawat, Jeff Dean, and others.
+/**
+ * @fileoverview Loader that handles goog.require() for Node.JS.
+ */
 
-#include <google/protobuf/service.h>
+var oldLoader = goog.global.CLOSURE_IMPORT_SCRIPT;
 
-namespace google {
-namespace protobuf {
+goog.global.CLOSURE_IMPORT_SCRIPT = function(src, opt_sourceText) {
+  if (opt_sourceText === undefined) {
+    try {
+      // Load from the current directory.
+      require("./" + src);
+      return true;
+    } catch (e) {
+      // Fall back to the Closure loader.
+    }
+  }
 
-Service::~Service() {}
-RpcChannel::~RpcChannel() {}
-RpcController::~RpcController() {}
-
-}  // namespace protobuf
-
-}  // namespace google
+  return oldLoader(src, opt_sourceText);
+};