Refactoring of ProgressIndicator

tools/test.dart

Index: tools/test.dart
diff --git a/tools/test.dart b/tools/test.dart
index 61b81f23c6be6a64b9447816839bd7c49b8b4f22..ee7ea8534294f939ef3d8f6ba07a1c9a07d97a8d 100755
--- a/tools/test.dart
+++ b/tools/test.dart
@@ -173,13 +173,42 @@ main() {
     DebugLogger.close();
   }
 
+  var eventListener = [];
+  if (progressIndicator != 'silent') {
+    var printFailures = true;
+    var formatter = new Formatter();
+    if (progressIndicator == 'color') {
+      progressIndicator = 'compact';
+      formatter = new ColorFormatter();
+    }
+    if (progressIndicator == 'diff') {
+      progressIndicator = 'compact';
+      formatter = new ColorFormatter();
+      printFailures = false;
+      eventListener.add(new StatusFileUpdatePrinter());
+    }
+    eventListener.add(new SkippedCompilationsPrinter());
+    eventListener.add(new SummaryPrinter());
+    eventListener.add(new FlakyLogWriter());
+    if (printFailures) {
+      eventListener.add(new TestFailurePrinter(formatter));
+    }
+    eventListener.add(new LeftOverTempDirPrinter());
+    if (printTiming) {
+      eventListener.add(new TimingPrinter(startTime));
+    }
+    eventListener.add(new ProgressIndicator.fromName(progressIndicator,
+                                                     startTime,
+                                                     formatter));
+  }
+  eventListener.add(new ExitCodeSetter());
+
   // Start process queue.
   new ProcessQueue(maxProcesses,
                    maxBrowserProcesses,
-                   progressIndicator,
                    startTime,
-                   printTiming,
                    testSuites,
+                   eventListener,
                    allTestsFinished,
                    verbose,
                    listTests);