Mojo code generator: simplify how imported types and values are handled.

mojo/public/tools/bindings/generators/js_templates/module.amd.tmpl

Index: mojo/public/tools/bindings/generators/js_templates/module.amd.tmpl
diff --git a/mojo/public/tools/bindings/generators/js_templates/module.amd.tmpl b/mojo/public/tools/bindings/generators/js_templates/module.amd.tmpl
index 1fe27f72dd25dc87ccabb5cd2c9997f65a51ed30..3d0a4f480cbb932f788086bf08ccca60ecf8375d 100644
--- a/mojo/public/tools/bindings/generators/js_templates/module.amd.tmpl
+++ b/mojo/public/tools/bindings/generators/js_templates/module.amd.tmpl
@@ -22,13 +22,12 @@
 
 {%-   for import in imports %}
   var {{import.unique_name}} =
-      mojo.internal.exposeNamespace('{{import.module.namespace}}');
+      mojo.internal.exposeNamespace('{{import.namespace}}');
   if (mojo.config.autoLoadMojomDeps) {
     mojo.internal.loadMojomIfNecessary(
-        '{{import.module.path}}',
-        new URL(
-            '{{import.module|get_relative_path(module)}}.js',
-            document.currentScript.src).href);
+        '{{import.path}}',
+        new URL('{{import|get_relative_path(module)}}.js',
+                document.currentScript.src).href);
   }
 {%-   endfor %}
 
@@ -49,7 +48,7 @@ define("{{module.path}}", [
     "mojo/public/js/core",
     "mojo/public/js/validator",
 {%-   for import in imports %}
-    "{{import.module.path}}",
+    "{{import.path}}",
 {%-   endfor %}
 ], function(
 {%- if module.path !=