Update mojo sdk to rev cc531b32182099a5a034a99daff35ed5d38a61c8

mojo/public/tools/bindings/generators/dart_templates/interface_definition.tmpl

 {%- for method in interface.methods %}
 const int k{{interface.name}}_{{method.name}}_name = {{method.ordinal}};
 {%- endfor %}
 
-
-class {{interface.name}}Client extends bindings.Client {
-  {{interface.name}}Client(core.MojoMessagePipeEndpoint endpoint) : super(endpoint);
+abstract class {{interface.name}}Calls {
+  void enqueueMessage(Type t, int name, Object msg);
+  Future enqueueMessageWithRequestID(Type t, int name, int id, Object msg);
+  bool get isOpen;
 
 {%- for method in interface.methods %}
 {%- if method.response_parameters == None %}
-  void {{method.name|stylize_method}}(
+  void call{{method.name}}(
 {%- for parameter in method.parameters -%}
     {{parameter.kind|dart_decl_type}} {{parameter.name}}{% if not loop.last %}, {% endif %}
 {%- endfor -%}
   ) {
     assert(isOpen);
     var params = new {{interface.name}}_{{method.name}}_Params();
 {%- for parameter in method.parameters %}
     params.{{parameter.name}} = {{parameter.name}};
 {%- endfor %}
     enqueueMessage({{interface.name}}_{{method.name}}_Params,
                    k{{interface.name}}_{{method.name}}_name,
                    params);
   }
 {% else %}
-  Future<{{interface.name}}_{{method.name}}_ResponseParams> {{method.name|stylize_method}}(
+  Future<{{interface.name}}_{{method.name}}_ResponseParams> call{{method.name}}(
 {%- for parameter in method.parameters -%}
     {{parameter.kind|dart_decl_type}} {{parameter.name}}{% if not loop.last %}, {% endif %}
 {%- endfor -%}
   ) {
     assert(isOpen);
     var params = new {{interface.name}}_{{method.name}}_Params();
 {%- for parameter in method.parameters %}
     params.{{parameter.name}} = {{parameter.name}};
 {%- endfor %}
     return enqueueMessageWithRequestID(
         {{interface.name}}_{{method.name}}_Params,
         k{{interface.name}}_{{method.name}}_name,
+        0,
         bindings.kMessageExpectsResponse,
         params);
   }
 {%- endif %}
 {%- endfor %}
+}
+
+class {{interface.name}}Client extends bindings.Client with {{interface.name}}Calls {
+  {{interface.name}}Client(core.MojoMessagePipeEndpoint endpoint) : super(endpoint);
 
   void handleResponse(bindings.MessageReader reader) {
     switch (reader.name) {
 {%- for method in interface.methods %}
 {%- if method.response_parameters != None %}
       case k{{interface.name}}_{{method.name}}_name:
         var r = reader.decodeStruct({{interface.name}}_{{method.name}}_ResponseParams);
         Completer c = completerQueue.removeAt(0);
         c.complete(r);
         break;
 {%- endif %}
 {%- endfor %}
       default:
         throw new Exception("Unexpected message name");
         break;
     }
   }
 }
 
 
-class {{interface.name}}Interface extends bindings.Interface {
+abstract class {{interface.name}}Interface extends bindings.Interface
+{% if interface.client != None -%}
+with {{imported_from[interface.client]}}{{interface.client}}Calls
+{% endif -%} {
   {{interface.name}}Interface(core.MojoMessagePipeEndpoint endpoint) : super(endpoint);
 
-  bindings.Message handleMessage(bindings.MessageReader reader,
-                                 Function messageHandler) {
+{% for method in interface.methods %}
+{%- if method.response_parameters == None %}
+  void {{method.name|stylize_method}}(
+  {%- for parameter in method.parameters -%}
+    {{parameter.kind|dart_decl_type}} {{parameter.name}}{% if not loop.last %}, {% endif %}
+  {%- endfor -%}
+  );
+{%- else %}
+  {{interface.name}}_{{method.name}}_ResponseParams {{method.name|stylize_method}}(
+  {%- for parameter in method.parameters -%}
+    {{parameter.kind|dart_decl_type}} {{parameter.name}}{% if not loop.last %}, {% endif %}
+  {%- endfor -%}
+  );
+{%- endif %}
+{%- endfor %}
+
+  bindings.Message handleMessage(bindings.MessageReader reader) {
     switch (reader.name) {
 {%- for method in interface.methods %}
       case k{{interface.name}}_{{method.name}}_name:
         var params = reader.decodeStruct({{interface.name}}_{{method.name}}_Params);
 {%- if method.response_parameters == None %}
-        messageHandler(params);
+        {{method.name|stylize_method}}(params);
 {%- else %}
-        var response = messageHandler(params);
+        var response = {{method.name|stylize_method}}(
+          {%- for parameter in method.parameters -%}
+              params.{{parameter.name}}{% if not loop.last %}, {% endif %}
+          {%- endfor -%}
+        );
         return buildResponseWithID(
             {{interface.name}}_{{method.name}}_ResponseParams,
             k{{interface.name}}_{{method.name}}_name,
+            reader.requestID,
             bindings.kMessageIsResponse,
             response);
 {%- endif %}
         break;
 {%- endfor %}
       default:
         throw new Exception("Unexpected message name");
         break;
     }
     return null;
   }
 }
 
 
 {#--- TODO(zra): Validation #}
 
 
 {#--- Interface Constants #}
 {% for constant in interface.constants %}
 final {{constant.name}} = {{constant.value|expression_to_text}};
 {%-   endfor %}
 
 
 {#--- Interface Enums #}
 {%- from "enum_definition.tmpl" import enum_def -%}
 {%- for enum in interface.enums %}
   {{ enum_def("", enum) }}
 {%-  endfor %}