Make an AstProvider available to AssistProcessors

pkg/analysis_server/lib/src/edit/edit_domain.dart

Index: pkg/analysis_server/lib/src/edit/edit_domain.dart
diff --git a/pkg/analysis_server/lib/src/edit/edit_domain.dart b/pkg/analysis_server/lib/src/edit/edit_domain.dart
index 55f94fbc34bd5af4b882a7126dbe0a7ea93e75e2..70dd9fb00869d926422feb2841599ff679a6576e 100644
--- a/pkg/analysis_server/lib/src/edit/edit_domain.dart
+++ b/pkg/analysis_server/lib/src/edit/edit_domain.dart
@@ -175,6 +175,7 @@ class EditDomainHandler extends AbstractRequestHandler {
             offset,
             length,
             compilationUnitElement.context,
+            server.getAstProvider(file),
             unit);
         try {
           AssistProcessor processor = new AssistProcessor(dartAssistContext);
@@ -599,10 +600,13 @@ class _DartAssistContextForValues implements DartAssistContext {
   final engine.AnalysisContext analysisContext;
 
   @override
+  final AstProvider astProvider;
+
+  @override
   final CompilationUnit unit;
 
   _DartAssistContextForValues(this.source, this.selectionOffset,
-      this.selectionLength, this.analysisContext, this.unit);
+      this.selectionLength, this.analysisContext, this.astProvider, this.unit);
 }
 
 /**