Redo "Steps towards making dart2js JS AST templates an indepentent library."

pkg/dart2js_incremental/lib/library_updater.dart

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library dart2js_incremental.library_updater;
 
 import 'dart:async' show
     Future;
 
 import 'dart:convert' show
@@ skipping 977 matching lines @@
       // appear as if it was newly enqueued.
       if (element.initializer == null) {
         return const <jsAst.Statement>[];
       } else {
         throw new StateError("Don't know how to compile $element");
       }
     }
   }
 
   String prettyPrintJs(jsAst.Node node) {
-    jsAst.Printer printer = new jsAst.Printer(compiler, null);
+    jsAst.JavaScriptPrintingOptions options =
+        new jsAst.JavaScriptPrintingOptions();
+    jsAst.JavaScriptPrintingContext context =
+        new jsAst.Dart2JSJavaScriptPrintingContext(compiler, null);
+    jsAst.Printer printer = new jsAst.Printer(options, context);
     printer.blockOutWithoutBraces(node);
-    return printer.outBuffer.getText();
+    return context.outBuffer.getText();
   }
 
   String callNameFor(FunctionElement element) {
     // TODO(ahe): Call a method in the compiler to obtain this name.
     String callPrefix = namer.callPrefix;
     int parameterCount = element.functionSignature.parameterCount;
     return '$callPrefix\$$parameterCount';
   }
 
   List<String> computeFields(ClassElement cls) {
@@ skipping 471 matching lines @@
         .buildFieldsHackForIncrementalCompilation(classElement);
     // TODO(ahe): Rewrite for new emitter.
     ClassBuilder builder = new ClassBuilder(classElement, namer);
     classEmitter.emitFields(cls, builder);
     return builder.fields;
   }
 }
 
 // TODO(ahe): Remove this method.
 NO_WARN(x) => x;