Flush results when contexts are made idle.

pkg/analysis_server/lib/src/analysis_server.dart

Index: pkg/analysis_server/lib/src/analysis_server.dart
diff --git a/pkg/analysis_server/lib/src/analysis_server.dart b/pkg/analysis_server/lib/src/analysis_server.dart
index 4a2734c3e575b8983c42b25dbb85f7b0b7305c7e..25d425c6eaca73ed5d9895c3d959c9a163966146 100644
--- a/pkg/analysis_server/lib/src/analysis_server.dart
+++ b/pkg/analysis_server/lib/src/analysis_server.dart
@@ -728,7 +728,7 @@ class AnalysisServer {
       return units;
     }
     // add a unit for each unit/library combination
-    runWithWorkingCacheSize(context, () {
+    runWithActiveContext(context, () {
       Source unitSource = contextSource.source;
       List<Source> librarySources = context.getLibrariesContaining(unitSource);
       for (Source librarySource in librarySources) {
@@ -1468,7 +1468,7 @@ class AnalysisServer {
       return null;
     }
     // if library has been already resolved, resolve unit
-    return runWithWorkingCacheSize(context, () {
+    return runWithActiveContext(context, () {
       return context.resolveCompilationUnit2(source, librarySource);
     });
   }