- Update the style of switch statement.

bin/builtin.dart

 // Copyright (c) 2012, 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.
 
 #library("builtin");
 
 void print(arg) {
   _Logger._printString(arg.toString());
 }
 
@@ skipping 70 matching lines @@
   return resolved.toString();
 }
 
 
 String _filePathFromUri(String userUri) {
   var uri = new Uri.fromString(userUri);
   _logResolution("# Getting file path from: $uri");
 
   var path;
   switch (uri.scheme) {
-  case 'file': path = _filePathFromFileUri(uri); break;
-  case 'dart-ext': path = _filePathFromOtherUri(uri); break;
-  case 'package': path = _filePathFromPackageUri(uri); break;
-
-  default:
-    // Only handling file, dart-ext and package URIs in standalone binary.
-    _logResolution("# Not a file, dart-ext, or package URI.");
-    throw "Not a known scheme: $uri";
+    case 'file':
+      path = _filePathFromFileUri(uri);
+      break;
+    case 'dart-ext':
+      path = _filePathFromOtherUri(uri);
+      break;
+    case 'package':
+      path = _filePathFromPackageUri(uri);
+      break;
+    default:
+      // Only handling file and package URIs in standalone binary.
+      _logResolution("# Unknown scheme (${uri.scheme}) in $uri.");
+      throw "Not a known scheme: $uri";
   }
 
   if (_is_windows) {
     // Drop the leading / before the drive letter.
     path = path.substring(1);
     _logResolution("# path: $path");
   }
 
   return path;
 }
@@ skipping 23 matching lines @@
     var wrong = 'package://$path';
 
     throw "URIs using the 'package:' scheme should look like " +
           "'$right', not '$wrong'.";
   }
 
   var path = _entrypoint.resolve('packages/${uri.path}').path;
   _logResolution("# Package: $path");
   return path;
 }