Fix test-debug: make sure debugger is unloaded before running next test

test/cctest/test-debug.cc

 // Copyright 2007-2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 418 matching lines @@
           } else if (RelocInfo::IsJSReturn(rmode)) {
             CHECK(!Debug::IsDebugBreakAtReturn(it.rinfo()));
           }
         }
       }
     }
   }
 }
 
 
+void ForceUnloadDebugger() {
+  Debugger::never_unload_debugger_ = false;
+  Debugger::UnloadDebugger();
+}
+
+
 } }  // namespace v8::internal
 
 
 // Check that the debugger has been fully unloaded.
 static void CheckDebuggerUnloaded(bool check_functions = false) {
   // Let debugger to unload itself synchronously
   v8::Debug::ProcessDebugMessages();
 
   v8::internal::CheckDebuggerUnloaded(check_functions);
 }
@@ skipping 5690 matching lines @@
   debugger_context = v8::Handle<v8::Context>();
   CheckDebuggerUnloaded();
 }
 
 
 TEST(DebugContextIsPreservedBetweenAccesses) {
   v8::HandleScope scope;
   v8::Local<v8::Context> context1 = v8::Debug::GetDebugContext();
   v8::Local<v8::Context> context2 = v8::Debug::GetDebugContext();
   CHECK_EQ(*context1, *context2);
+  // Make sure debugger is unloaded before running other tests.
+  v8::internal::ForceUnloadDebugger();
+  CheckDebuggerUnloaded();
 }