Eliminate unused url mapping parameter in dartutils

runtime/vm/unit_test.h

 // Copyright (c) 2011, 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.
 
 #ifndef VM_UNIT_TEST_H_
 #define VM_UNIT_TEST_H_
 
 #include "include/dart_api.h"
 
 #include "platform/globals.h"
@@ skipping 215 matching lines @@
  private:
   static TestCaseBase* first_;
   static TestCaseBase* tail_;
 
   TestCaseBase* next_;
   const char* name_;
 
   DISALLOW_COPY_AND_ASSIGN(TestCaseBase);
 };
 
+#define USER_TEST_URI "test-lib"
+#define CORELIB_TEST_URI "dart:test-lib"
 
 class TestCase : TestCaseBase {
  public:
   typedef void (RunEntry)();
 
   TestCase(RunEntry* run, const char* name) : TestCaseBase(name), run_(run) { }
 
   static Dart_Handle LoadTestScript(const char* script,
-                                    Dart_NativeEntryResolver resolver);
+                                    Dart_NativeEntryResolver resolver,
+                                    const char* lib_uri = USER_TEST_URI);
+
+  static Dart_Handle LoadCoreTestScript(const char* script,
+                                        Dart_NativeEntryResolver resolver);
   static Dart_Handle lib();
-  static const char* url() { return "dart:test-lib"; }
+  static const char* url() { return USER_TEST_URI; }
   static Dart_Isolate CreateTestIsolateFromSnapshot(uint8_t* buffer) {
     return CreateIsolate(buffer);
   }
   static Dart_Isolate CreateTestIsolate() {
     return CreateIsolate(bin::snapshot_buffer);
   }
   static Dart_Handle library_handler(Dart_LibraryTag tag,
                                      Dart_Handle library,
                                      Dart_Handle url);
 
@@ skipping 141 matching lines @@
       }                                                                        \
     } else {                                                                   \
       dart::Expect(__FILE__, __LINE__).Fail("expected True, but was '%s'\n",   \
           #handle);                                                            \
     }                                                                          \
   } while (0)
 
 }  // namespace dart
 
 #endif  // VM_UNIT_TEST_H_