Remove Compiler/JavaScriptBackend from metadata_collector

pkg/compiler/lib/src/js_emitter/full_emitter/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.full_emitter;
 
 import 'dart:collection' show HashMap;
 import 'dart:convert';
 
 import 'package:js_runtime/shared/embedded_names.dart' as embeddedNames;
@@ skipping 1517 matching lines @@
     List<CodeOutputListener> codeOutputListeners;
     if (generateSourceMap) {
       locationCollector = new LocationCollector();
       codeOutputListeners = <CodeOutputListener>[locationCollector];
     }
 
     CodeOutput mainOutput = new StreamCodeOutput(
         compiler.outputProvider('', 'js', OutputType.js), codeOutputListeners);
     outputBuffers[mainOutputUnit] = mainOutput;
 
-    mainOutput.addBuffer(jsAst.createCodeBuffer(program, compiler,
+    mainOutput.addBuffer(jsAst.createCodeBuffer(
+        program, compiler.options, backend.sourceInformationStrategy,
         monitor: compiler.dumpInfoTask));
 
     if (compiler.options.deferredMapUri != null) {
       outputDeferredMap();
     }
 
     if (generateSourceMap) {
       mainOutput.add(SourceMapBuilder.generateSourceMapTag(
           compiler.options.sourceMapUri, compiler.options.outputUri));
     }
@@ skipping 313 matching lines @@
       }
 
       String partPrefix =
           backend.deferredPartFileName(outputUnit.name, addExtension: false);
       CodeOutput output = new StreamCodeOutput(
           compiler.outputProvider(partPrefix, 'part.js', OutputType.jsPart),
           outputListeners);
 
       outputBuffers[outputUnit] = output;
 
-      output.addBuffer(jsAst.createCodeBuffer(outputAsts[outputUnit], compiler,
+      output.addBuffer(jsAst.createCodeBuffer(outputAsts[outputUnit],
+          compiler.options, backend.sourceInformationStrategy,
           monitor: compiler.dumpInfoTask));
 
       // Make a unique hash of the code (before the sourcemaps are added)
       // This will be used to retrieve the initializing function from the global
       // variable.
       String hash = hasher.getHash();
 
       output.add('$N${deferredInitializers}["$hash"]$_=$_'
           '${deferredInitializers}.current$N');
 
@@ skipping 46 matching lines @@
     // data.
     mapping["_comment"] = "This mapping shows which compiled `.js` files are "
         "needed for a given deferred library import.";
     mapping.addAll(compiler.deferredLoadTask.computeDeferredMap());
     compiler.outputProvider(
         compiler.options.deferredMapUri.path, '', OutputType.info)
       ..add(const JsonEncoder.withIndent("  ").convert(mapping))
       ..close();
   }
 }