Add bazel worker support to the dev compiler.

test/command/hello.js

Index: test/command/hello.js
diff --git a/test/command/hello.js b/test/command/hello.js
deleted file mode 100644
index e8e040388792f65cbc058a1c12c820f4fec09d84..0000000000000000000000000000000000000000
--- a/test/command/hello.js
+++ /dev/null
@@ -1,17 +0,0 @@
-dart_library.library('hello', null, /* Imports */[
-  'dart_sdk'
-], function(exports, dart_sdk) {
-  'use strict';
-  const core = dart_sdk.core;
-  const dart = dart_sdk.dart;
-  const dartx = dart_sdk.dartx;
-  const hello = Object.create(null);
-  hello.main = function() {
-    return core.print('hello!');
-  };
-  dart.fn(hello.main);
-  // Exports:
-  exports.hello = hello;
-});
-
-//# sourceMappingURL=hello.js.map