Base JavaScript code position computation on JavaScript tracer.

pkg/compiler/lib/src/compiler.dart

 // Copyright (c) 2012, 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.compiler_base;
 
 import 'dart:async' show
     EventSink,
     Future;
 
@@ skipping 1055 matching lines @@
     processQueue(enqueuer.codegen, mainFunction);
     enqueuer.codegen.logSummary(reporter.log);
 
     int programSize = backend.assembleProgram();
 
     if (dumpInfo) {
       dumpInfoTask.reportSize(programSize);
       dumpInfoTask.dumpInfo();
     }
 
+    backend.sourceInformationStrategy.onComplete();
+
     checkQueues();
   }
 
   void fullyEnqueueLibrary(LibraryElement library, Enqueuer world) {
     void enqueueAll(Element element) {
       fullyEnqueueTopLevelElement(element, world);
     }
     library.implementation.forEachLocalMember(enqueueAll);
   }
 
@@ skipping 1102 matching lines @@
     if (_otherDependencies == null) {
       _otherDependencies = new Setlet<Element>();
     }
     _otherDependencies.add(element.implementation);
   }
 
   Iterable<Element> get otherDependencies {
     return _otherDependencies != null ? _otherDependencies : const <Element>[];
   }
 }