Removes dependency on v8 from dartc testing

compiler/javatests/com/google/dart/corelib/SharedTests.java

-// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
+// 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.
 
 package com.google.dart.corelib;
 
 import com.google.common.io.CharStreams;
 import com.google.common.io.LineReader;
-import com.google.dart.runner.V8Launcher;
 
 import junit.extensions.TestSetup;
 import junit.framework.Test;
 import junit.framework.TestCase;
 import junit.framework.TestSuite;
 
 import java.io.File;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.InputStreamReader;
@@ skipping 23 matching lines @@
     super(test);
   }
 
   public static TestSuite suite() {
     return new SuiteBuilder().buildSuite();
   }
 
   protected static class SuiteBuilder {
     protected TestSuite buildSuite() {
       TestSuite suite = new TestSuite("Shared Dart tests");
-
-      if (!V8Launcher.isConfigured()) {
-        return configurationProblem(suite,
-                                    "Please set the system property com.google.dart.runner.d8");
-      }
-
       File file = new File(listTests[0]);
       if (!file.canExecute()) {
         return configurationProblem(suite, file.getPath() + " is not executable");
       }
       ProcessBuilder builder = new ProcessBuilder(listTests);
       try {
         Process process = builder.start();
         InputStream inputStream = process.getInputStream();
         StringBuilder sb = new StringBuilder();
         try {
@@ skipping 36 matching lines @@
       suite.addTest(new TestCase("Configuration problem") {
         @Override
         public void runBare() throws Throwable {
           fail(message);
         }
       });
       return suite;
     }
   }
 }