Remove Compiler/JavaScriptBackend from metadata_collector

pkg/compiler/lib/src/js_emitter/lazy_emitter/model_emitter.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.js_emitter.lazy_emitter.model_emitter;
 
 import 'package:js_runtime/shared/embedded_names.dart'
     show
         CREATE_NEW_ISOLATE,
         DEFERRED_LIBRARY_URIS,
@@ skipping 133 matching lines @@
     js.Statement mainAst = emitMainFragment(program);
 
     js.TokenCounter counter = new js.TokenCounter();
     fragmentsCode.forEach(counter.countTokens);
     counter.countTokens(mainAst);
 
     program.finalizers.forEach((js.TokenFinalizer f) => f.finalizeTokens());
 
     // TODO(johnnniwinther): Support source maps in this emitter.
     for (int i = 0; i < fragmentsCode.length; ++i) {
-      String code = js.createCodeBuffer(fragmentsCode[i], compiler).getText();
+      String code = js
+          .createCodeBuffer(fragmentsCode[i], compiler.options,
+              backend.sourceInformationStrategy)
+          .getText();
       totalSize += code.length;
       compiler.outputProvider(
           fragments[i + 1].outputFileName, deferredExtension, OutputType.jsPart)
         ..add(code)
         ..close();
     }
 
-    String mainCode = js.createCodeBuffer(mainAst, compiler).getText();
+    String mainCode = js
+        .createCodeBuffer(
+            mainAst, compiler.options, backend.sourceInformationStrategy)
+        .getText();
     compiler.outputProvider(mainFragment.outputFileName, 'js', OutputType.js)
       ..add(buildGeneratedBy(compiler))
       ..add(mainCode)
       ..close();
     totalSize += mainCode.length;
 
     return totalSize;
   }
 
   /// Returns a [js.Literal] that represents the string result of unparsing
   /// [value].
   ///
   /// The returned node will, when its string value is requested, pretty-print
   /// the given [value] and, if [protectForEval] is true, wrap the resulting
   /// string in parenthesis. The result is also escaped.
   ///
   /// See [_UnparsedNode] for details.
   js.Literal unparse(Compiler compiler, js.Node value,
       {bool protectForEval: true}) {
-    return new js.UnparsedNode(value, compiler, protectForEval);
+    return new js.UnparsedNode(value, compiler.options, protectForEval);
   }
 
   String buildGeneratedBy(compiler) {
     var suffix = '';
     if (compiler.options.hasBuildId) {
       suffix = ' version: ${compiler.options.buildId}';
     }
     return '// Generated by dart2js, the Dart to JavaScript compiler$suffix.\n';
   }
 
@@ skipping 1075 matching lines @@
   #eagerClasses;
 
   var end = Date.now();
   // print('Setup: ' + (end - start) + ' ms.');
 
   #invokeMain;  // Start main.
 
 })(Date.now(), #code)
 }""";
 }