Prioritize scheduling analysis for priority sources.

pkg/analyzer/test/src/context/context_test.dart

Index: pkg/analyzer/test/src/context/context_test.dart
diff --git a/pkg/analyzer/test/src/context/context_test.dart b/pkg/analyzer/test/src/context/context_test.dart
index f8d788026d802c53afd51fad5213c687c7441586..bbd033e755f9737f7c44f73196eda0a85fc47917 100644
--- a/pkg/analyzer/test/src/context/context_test.dart
+++ b/pkg/analyzer/test/src/context/context_test.dart
@@ -2033,7 +2033,8 @@ int a = 0;''');
   }
 
   void _flushAst(Source source) {
-    CacheEntry entry = context.getReadableSourceEntryOrNull(new LibrarySpecificUnit(source, source));
+    CacheEntry entry = context
+        .getReadableSourceEntryOrNull(new LibrarySpecificUnit(source, source));
     entry.setState(RESOLVED_UNIT, CacheState.FLUSHED);
   }