Port Mojo's sample_service.cc to JavaScript

mojo/public/bindings/js/codec.js

Index: mojo/public/bindings/js/codec.js
diff --git a/mojo/public/bindings/js/codec.js b/mojo/public/bindings/js/codec.js
index b7dcbeea6442a72443c518a7f6b73e4379da86c9..2df9c469571dc19d64a86333389583d62a5db641 100644
--- a/mojo/public/bindings/js/codec.js
+++ b/mojo/public/bindings/js/codec.js
@@ -50,6 +50,12 @@ define(function() {
     return low + high * 0x10000;
   }
 
+  var kAlignment = 8;
+
+  function align(size) {
+    return size + (kAlignment - (size % kAlignment)) % kAlignment;

[abarth-chromium, 2013/11/18 23:30:44]

The last % kAlignment is needed to handle the size == 8 case.

+  }
+
   // Buffer -------------------------------------------------------------------
 
   function Buffer(size) {
@@ -391,7 +397,7 @@ define(function() {
   };
 
   var exports = {};
-  exports.load32 = load32;

[abarth-chromium, 2013/11/18 23:30:44]

We don't need to export load32 anymore.  We used to export that for some
low-level tests that are now subsumed by higher level testing.

+  exports.align = align;
   exports.MessageBuilder = MessageBuilder;
   exports.MessageReader = MessageReader;
   exports.kArrayHeaderSize = kArrayHeaderSize;