Notify all drivers about all changed files.

pkg/analysis_server/lib/src/context_manager.dart

Index: pkg/analysis_server/lib/src/context_manager.dart
diff --git a/pkg/analysis_server/lib/src/context_manager.dart b/pkg/analysis_server/lib/src/context_manager.dart
index a543ad544f563953181d4076aad4b806882c3eea..04cf2e95c75b0892c466e8e68a3b47ecb0e531f7 100644
--- a/pkg/analysis_server/lib/src/context_manager.dart
+++ b/pkg/analysis_server/lib/src/context_manager.dart
@@ -1440,7 +1440,9 @@ class ContextManagerImpl implements ContextManager {
         break;
       case ChangeType.MODIFY:
         if (enableNewAnalysisDriver) {
-          info.analysisDriver.changeFile(path);
+          for (AnalysisDriver driver in driverMap.values) {
+            driver.changeFile(path);
+          }
         } else {
           List<Source> sources = info.context.getSourcesWithFullName(path);
           if (!sources.isEmpty) {