dart2js: Refactoring, documentation, and a few bugfixes in Namer class.

pkg/compiler/lib/src/js_emitter/new_emitter/emitter.dart

Index: pkg/compiler/lib/src/js_emitter/new_emitter/emitter.dart
diff --git a/pkg/compiler/lib/src/js_emitter/new_emitter/emitter.dart b/pkg/compiler/lib/src/js_emitter/new_emitter/emitter.dart
index a543208cb2a1265976f8a1e35b15227dbc561618..5112d10c9344cd752b42e38cd0ae0cbc81fdd8e4 100644
--- a/pkg/compiler/lib/src/js_emitter/new_emitter/emitter.dart
+++ b/pkg/compiler/lib/src/js_emitter/new_emitter/emitter.dart
@@ -85,7 +85,7 @@ class Emitter implements emitterTask.Emitter {
   }
 
   js.PropertyAccess _globalPropertyAccess(Element element) {
-     String name = namer.getNameX(element);
+     String name = namer.globalPropertyName(element);
      js.PropertyAccess pa = new js.PropertyAccess.field(
          new js.VariableUse(namer.globalObjectFor(element)),
          name);
@@ -95,13 +95,13 @@ class Emitter implements emitterTask.Emitter {
   @override
   js.Expression isolateLazyInitializerAccess(FieldElement element) {
     return js.js('#.#', [namer.globalObjectFor(element),
-                         namer.getLazyInitializerName(element)]);
+                         namer.lazyInitializerName(element)]);
   }
 
   @override
   js.Expression isolateStaticClosureAccess(FunctionElement element) {
     return js.js('#.#()',
-        [namer.globalObjectFor(element), namer.getStaticClosureName(element)]);
+        [namer.globalObjectFor(element), namer.staticClosureName(element)]);
   }
 
   @override