Connect analyzer's AnalysisError object to front_end's CompilationError.

pkg/analyzer/lib/src/summary/package_bundle_reader.dart

Index: pkg/analyzer/lib/src/summary/package_bundle_reader.dart
diff --git a/pkg/analyzer/lib/src/summary/package_bundle_reader.dart b/pkg/analyzer/lib/src/summary/package_bundle_reader.dart
index 23645da1d89ae9620ec7da0ab37b2d135aaa4d67..4c6580b027b9ffd26aeb617098a5677c862c26f3 100644
--- a/pkg/analyzer/lib/src/summary/package_bundle_reader.dart
+++ b/pkg/analyzer/lib/src/summary/package_bundle_reader.dart
@@ -21,6 +21,7 @@ import 'package:analyzer/task/dart.dart';
 import 'package:analyzer/task/general.dart';
 import 'package:analyzer/task/model.dart';
 import 'package:path/path.dart' as pathos;
+import 'package:source_span/source_span.dart' as source_span;
 
 /**
  * The [ResultProvider] that provides results from input package summaries.
@@ -105,6 +106,10 @@ class InSummarySource extends Source {
   String get shortName => pathos.basename(fullName);
 
   @override
+  source_span.SourceFile get sourceFile =>
+      throw new StateError('Tried to get location info for InSummarySource');
+
+  @override
   UriKind get uriKind => UriKind.PACKAGE_URI;
 
   @override