Implement using AnalysisDriver in analyzer_cli. Disabled.

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

Index: pkg/analyzer/lib/src/dart/analysis/driver.dart
diff --git a/pkg/analyzer/lib/src/dart/analysis/driver.dart b/pkg/analyzer/lib/src/dart/analysis/driver.dart
index d1497604c790bcda30aa9250479d31fca7b1157b..91a5186bf34557998449f25a9c1c908e1c75b624 100644
--- a/pkg/analyzer/lib/src/dart/analysis/driver.dart
+++ b/pkg/analyzer/lib/src/dart/analysis/driver.dart
@@ -1483,11 +1483,13 @@ class PerformanceLog {
   }
 
   /**
-   * Write a new line into the log
+   * Write a new line into the log.
    */
   void writeln(String msg) {
-    String indent = '\t' * _level;
-    sink.writeln('$indent$msg');
+    if (sink != null) {
+      String indent = '\t' * _level;
+      sink.writeln('$indent$msg');
+    }
   }
 }