Hook up more import/exports in natives.

src/generator.js

Index: src/generator.js
diff --git a/src/generator.js b/src/generator.js
index 76dd8e47f1db0b670bb296a41c2f2892a79b58b4..d041c5b223385c538954c757b2cffcc21b0628a9 100644
--- a/src/generator.js
+++ b/src/generator.js
@@ -8,8 +8,17 @@
 
 %CheckIsBootstrapping();
 
+// -------------------------------------------------------------------
+// Imports
+
 var GlobalFunction = global.Function;
 
+var NewFunctionString;
+
+utils.Import(function(from) {
+  NewFunctionString = from.NewFunctionString;
+});
+
 // ----------------------------------------------------------------------------
 
 // Generator functions and objects are specified by ES6, sections 15.19.3 and
@@ -67,7 +76,7 @@ function GeneratorObjectThrow(exn) {
 
 
 function GeneratorFunctionConstructor(arg1) {  // length == 1
-  var source = $newFunctionString(arguments, 'function*');
+  var source = NewFunctionString(arguments, 'function*');
   var global_proxy = %GlobalProxy(GeneratorFunctionConstructor);
   // Compile the string in the constructor and not a helper so that errors
   // appear to come from here.
@@ -85,10 +94,10 @@ function GeneratorFunctionConstructor(arg1) {  // length == 1
 
 // Set up non-enumerable functions on the generator prototype object.
 var GeneratorObjectPrototype = GeneratorFunctionPrototype.prototype;
-$installFunctions(GeneratorObjectPrototype,
-                 DONT_ENUM,
-                 ["next", GeneratorObjectNext,
-                  "throw", GeneratorObjectThrow]);
+utils.InstallFunctions(GeneratorObjectPrototype,
+                       DONT_ENUM,
+                      ["next", GeneratorObjectNext,
+                       "throw", GeneratorObjectThrow]);
 
 %AddNamedProperty(GeneratorObjectPrototype, "constructor",
     GeneratorFunctionPrototype, DONT_ENUM | READ_ONLY);