Some preliminary support for quasi-generics

lib/runtime/dart/isolate.js

Index: lib/runtime/dart/isolate.js
diff --git a/lib/runtime/dart/isolate.js b/lib/runtime/dart/isolate.js
index 48c5c74ce167a8d43dafab82eef216831641a3ce..4468a0ea164bc04a67edb558f5e6adfab07f13b5 100644
--- a/lib/runtime/dart/isolate.js
+++ b/lib/runtime/dart/isolate.js
@@ -42,7 +42,7 @@ dart_library.library('dart/isolate', null, /* Imports */[
     static spawn(entryPoint, message, opts) {
       let paused = opts && 'paused' in opts ? opts.paused : false;
       try {
-        return dart.as(_isolate_helper.IsolateNatives.spawnFunction(entryPoint, message, paused).then(dart.fn(msg => new Isolate(dart.as(dart.dindex(msg, 1), SendPort), {pauseCapability: dart.as(dart.dindex(msg, 2), Capability), terminateCapability: dart.as(dart.dindex(msg, 3), Capability)}), Isolate, [dart.dynamic])), async.Future$(Isolate));
+        return _isolate_helper.IsolateNatives.spawnFunction(entryPoint, message, paused).then(dart.fn(msg => new Isolate(dart.as(dart.dindex(msg, 1), SendPort), {pauseCapability: dart.as(dart.dindex(msg, 2), Capability), terminateCapability: dart.as(dart.dindex(msg, 3), Capability)}), Isolate, [dart.dynamic]));
       } catch (e) {
         let st = dart.stackTrace(e);
         return async.Future$(Isolate).error(e, st);
@@ -64,7 +64,7 @@ dart_library.library('dart/isolate', null, /* Imports */[
         } else if (args != null) {
           dart.throw(new core.ArgumentError(`Args must be a list of Strings ${args}`));
         }
-        return dart.as(_isolate_helper.IsolateNatives.spawnUri(uri, args, message, paused).then(dart.fn(msg => new Isolate(dart.as(dart.dindex(msg, 1), SendPort), {pauseCapability: dart.as(dart.dindex(msg, 2), Capability), terminateCapability: dart.as(dart.dindex(msg, 3), Capability)}), Isolate, [dart.dynamic])), async.Future$(Isolate));
+        return _isolate_helper.IsolateNatives.spawnUri(uri, args, message, paused).then(dart.fn(msg => new Isolate(dart.as(dart.dindex(msg, 1), SendPort), {pauseCapability: dart.as(dart.dindex(msg, 2), Capability), terminateCapability: dart.as(dart.dindex(msg, 3), Capability)}), Isolate, [dart.dynamic]));
       } catch (e) {
         let st = dart.stackTrace(e);
         return async.Future$(Isolate).error(e, st);