Add interface versioning. Methods queryVersion and requireVersion.

content/content_resources.grd

 <?xml version="1.0" encoding="UTF-8"?>
 
 <grit latest_public_release="0" current_release="1" output_all_resource_defines="false">
   <outputs>
     <output filename="grit/content_resources.h" type="rc_header">
       <emit emit_type='prepend'></emit>
     </output>
     <output filename="content_resources.pak" type="data_package" />
   </outputs>
   <translations />
@@ skipping 39 matching lines @@
       </if>
       <if expr="not is_ios">
         <include name="IDR_MOJO_BINDINGS_JS" file="../mojo/public/js/bindings.js" flattenhtml="true" type="BINDATA" />
         <include name="IDR_MOJO_BUFFER_JS" file="../mojo/public/js/buffer.js" flattenhtml="true" type="BINDATA" />
         <include name="IDR_MOJO_CODEC_JS" file="../mojo/public/js/codec.js" flattenhtml="true" type="BINDATA" />
         <include name="IDR_MOJO_CONNECTOR_JS" file="../mojo/public/js/connector.js" flattenhtml="true" type="BINDATA" />
         <include name="IDR_MOJO_INTERFACE_TYPES_JS" file="../mojo/public/js/interface_types.js" flattenhtml="true" type="BINDATA" />
         <include name="IDR_MOJO_ROUTER_JS" file="../mojo/public/js/router.js" flattenhtml="true" type="BINDATA" />
         <include name="IDR_MOJO_UNICODE_JS" file="../mojo/public/js/unicode.js" flattenhtml="true" type="BINDATA" />
         <include name="IDR_MOJO_VALIDATOR_JS" file="../mojo/public/js/validator.js" flattenhtml="true" type="BINDATA" />
+        <include name="IDR_MOJO_CONTROL_MESSAGE_PROXY_JS" file="../mojo/public/js/lib/control_message_proxy.js" flattenhtml="true" type="BINDATA" />

[yzshen1, 2017/02/11 01:11:28]

Please order these js-bindings files by their names alphabetically. (here and
also other files, such as mojo_context_state.cc, dispatcher.cc, constants, etc.)

You don't have to reorder the entire file, just within the group of js-bindings
files.

[wangjimmy, 2017/02/13 20:43:06]

Done.

+        <include name="IDR_MOJO_CONTROL_MESSAGE_HANDLER_JS" file="../mojo/public/js/lib/control_message_handler.js" flattenhtml="true" type="BINDATA" />
+        <include name="IDR_MOJO_INTERFACE_CONTROL_MESSAGES_MOJO_JS" file="../mojo/public/interfaces/bindings/interface_control_messages.mojom.js" flattenhtml="true" type="BINDATA" />

[yzshen1, 2017/02/11 01:11:28]

Does it make sense to use "..._MOJOM_JS" instead of "..._MOJO_JS" to better
match the file name?

[wangjimmy, 2017/02/13 20:43:06]

Done.

       </if>
     </includes>
   </release>
 </grit>