Make possible to don't track cache dependencies.

pkg/analyzer/lib/src/task/driver.dart

Index: pkg/analyzer/lib/src/task/driver.dart
diff --git a/pkg/analyzer/lib/src/task/driver.dart b/pkg/analyzer/lib/src/task/driver.dart
index 70ebe3ba5a5e3d01c063baacdb98099b111ebef2..8f305231e747bf0dff55f246eaf3803a8c6d2852 100644
--- a/pkg/analyzer/lib/src/task/driver.dart
+++ b/pkg/analyzer/lib/src/task/driver.dart
@@ -278,7 +278,10 @@ class AnalysisDriver {
       AnalysisTarget target = task.target;
       CacheEntry entry = context.getCacheEntry(target);
       if (task.caughtException == null) {
-        List<TargetedResult> dependedOn = item.inputTargetedResults.toList();
+        List<TargetedResult> dependedOn =
+            context.analysisOptions.trackCacheDependencies
+                ? item.inputTargetedResults.toList()
+                : const <TargetedResult>[];
         Map<ResultDescriptor, dynamic> outputs = task.outputs;
         List<ResultDescriptor> results = task.descriptor.results;
         int resultLength = results.length;