Add timing info for file IO into Dart based analyzer.

pkg/analyzer/bin/analyzer.dart

 #!/usr/bin/env dart
 
 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 /** The entry point for the analyzer. */
 library analyzer;
 
 import 'dart:async';
@@ skipping 15 matching lines @@
       var options = CommandLineOptions.parse(args);
       return _runAnalyzer(options);
     });
   } else {
     int startTime = JavaSystem.currentTimeMillis();
 
     ErrorSeverity result = _runAnalyzer(options);
 
     if (options.perf) {
       int totalTime = JavaSystem.currentTimeMillis() - startTime;
+      int ioTime = PerformanceStatistics.io.result;
       int scanTime = PerformanceStatistics.scan.result;
       int parseTime = PerformanceStatistics.parse.result;
       int resolveTime = PerformanceStatistics.resolve.result;
       int errorsTime = PerformanceStatistics.errors.result;
       int hintsTime = PerformanceStatistics.hints.result;
       int angularTime = PerformanceStatistics.angular.result;
+      print("io:$ioTime");
       print("scan:$scanTime");
       print("parse:$parseTime");
       print("resolve:$resolveTime");
       print("errors:$errorsTime");
       print("hints:$hintsTime");
       print("angular:$angularTime");
       print("other:${totalTime
-        - (scanTime + parseTime + resolveTime + errorsTime + hintsTime
+        - (ioTime + scanTime + parseTime + resolveTime + errorsTime + hintsTime
            + angularTime)}");
       print("total:$totalTime");
       print("");
       print("Time spent in instanceof = ${instanceOfTimer.elapsedMilliseconds}");
     }
     exitCode = result.ordinal;
   }
 }
 
 ErrorSeverity _runAnalyzer(CommandLineOptions options) {
@@ skipping 80 matching lines @@
         stdout.writeln('>>> TEST $resultPassString ${stopwatch.elapsedMilliseconds}ms');
       } catch (e, stackTrace) {
         stderr.writeln(e);
         stderr.writeln(stackTrace);
         stderr.writeln('>>> EOF STDERR');
         stdout.writeln('>>> TEST CRASH');
       }
     });
   }
 }