Format all files under tools and utils directory.

tools/dart2js/sourceMapViewer/bin/source_map_viewer.dart

Index: tools/dart2js/sourceMapViewer/bin/source_map_viewer.dart
diff --git a/tools/dart2js/sourceMapViewer/bin/source_map_viewer.dart b/tools/dart2js/sourceMapViewer/bin/source_map_viewer.dart
index 2c8533d9e19bb4005c102dcbd6ce1e6bfc7e6bfc..b97460cb4dd9a3417fdaa9b603b183d2648d310b 100644
--- a/tools/dart2js/sourceMapViewer/bin/source_map_viewer.dart
+++ b/tools/dart2js/sourceMapViewer/bin/source_map_viewer.dart
@@ -71,7 +71,7 @@ void startServer() {
   Directory directory = new Directory(root);
   if (!directory.existsSync()) {
     print("Directory '$root' does not exist. "
-          "Run 'pub build' to generate the output.");
+        "Run 'pub build' to generate the output.");
     exit(-1);
   }
 
@@ -80,10 +80,10 @@ void startServer() {
   HttpServer.bind(InternetAddress.LOOPBACK_IP_V4, port).then((server) {
     port = server.port;
     print("Source mapping server is running on "
-           "'http://${server.address.address}:$port/'");
+        "'http://${server.address.address}:$port/'");
     Router router = new Router(server)
-                ..serve('/file').listen(handleFile)
-                ..serve('/map').listen(handleSourceMapFile);
+      ..serve('/file').listen(handleFile)
+      ..serve('/map').listen(handleSourceMapFile);
 
     // Set up default handler. This will serve files from our 'build'
     // directory. Disable jail root, as packages are local symlinks.
@@ -133,4 +133,4 @@ startBrowser(String url) {
       print(result.stderr);
     }
   });
-}
+}