Nuke some whitespace in observatory

runtime/observatory/lib/src/debugger/debugger_location.dart

 // Copyright (c) 2015, 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.
 
 part of debugger;
 
 class DebuggerLocation {
   DebuggerLocation.file(this.script, this.line, this.col);
   DebuggerLocation.func(this.function);
   DebuggerLocation.error(this.errorMessage);
@@ skipping 265 matching lines @@
       return completions;
     });
   }
 
   static Future<List<String>> _completeFunction(Debugger debugger,
                                                 Match match) {
     Isolate isolate = debugger.isolate;
     var base = match.group(1);
     var qualifier = match.group(2);
     base = (base == null ? '' : base);
-    
+
     if (qualifier == null) {
       return _lookupClass(isolate, base, allowPrefix:true).then((classes) {
         var completions = [];
 
         // Complete top-level function names.
         var functions = _lookupFunction(isolate, base, allowPrefix:true);
         var funcNames = functions.map((f) => f.name).toList();
         funcNames.sort();
         completions.addAll(funcNames);
 
@@ skipping 60 matching lines @@
     return 'invalid source location (${errorMessage})';
   }
 
   Script script;
   int line;
   int col;
   ServiceFunction function;
   String errorMessage;
   bool get valid => (errorMessage == null);
 }