dart2js: Add support for static fields to new emitter.

sdk/lib/_internal/compiler/implementation/js_emitter/model.dart

Index: sdk/lib/_internal/compiler/implementation/js_emitter/model.dart
diff --git a/sdk/lib/_internal/compiler/implementation/js_emitter/model.dart b/sdk/lib/_internal/compiler/implementation/js_emitter/model.dart
index 2a8748ea86c6156f29dd1ced34185217defe153c..691a17456ad23c0ae115928b7f410743f4f107cb 100644
--- a/sdk/lib/_internal/compiler/implementation/js_emitter/model.dart
+++ b/sdk/lib/_internal/compiler/implementation/js_emitter/model.dart
@@ -35,12 +35,15 @@ abstract class Output {
   MainOutput get mainOutput;
   final List<Library> libraries;
   final List<Constant> constants;
+  // TODO(floitsch): should we move static fields into libraries or classes?
+  final List<StaticField> staticNonFinalFields;
 
   /// Output file name without extension.
   final String outputFileName;
 
   Output(this.outputFileName,
          this.libraries,
+         this.staticNonFinalFields,
          this.constants);
 }
 
@@ -57,9 +60,10 @@ class MainOutput extends Output {
   MainOutput(String outputFileName,
              this.main,
              List<Library> libraries,
+             List<StaticField> staticNonFinalFields,
              List<Constant> constants,
              this.holders)
-      : super(outputFileName, libraries, constants);
+      : super(outputFileName, libraries, staticNonFinalFields, constants);
 
   MainOutput get mainOutput => this;
 }
@@ -77,8 +81,9 @@ class DeferredOutput extends Output {
                  this.name,
                  this.mainOutput,
                  List<Library> libraries,
+                 List<StaticField> staticNonFinalFields,
                  List<Constant> constants)
-      : super(outputFileName, libraries, constants);
+      : super(outputFileName, libraries, staticNonFinalFields, constants);
 }
 
 class Constant {
@@ -96,6 +101,17 @@ class Library {
   Library(this.uri, this.statics, this.classes);
 }
 
+class StaticField {
+  final String name;
+  final Holder holder;

[floitsch, 2014/10/16 14:27:55]

The holder for static fields in the "isolate" object "$".
I'm not sure if we need to store it here all the time...

[kasperl, 2014/10/17 06:47:04]

Maybe add this as a comment in the code?

[floitsch, 2014/10/17 09:25:56]

Done.

+  final js.Expression code;
+  final bool isFinal;
+  final bool isLazy;
+
+  StaticField(this.name, this.holder, this.code,
+              this.isFinal, this.isLazy);
+}
+
 class Class {
   final String name;
   final Holder holder;