Fixed test memory leaks

src/log.h

 // Copyright 2006-2008 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 65 matching lines @@
 #define LOG(Call)                           \
   do {                                      \
     if (v8::internal::Logger::is_enabled()) \
       v8::internal::Logger::Call;           \
   } while (false)
 #else
 #define LOG(Call) ((void) 0)
 #endif
 
 
-class VMState {
+class VMState BASE_EMBEDDED {
 #ifdef ENABLE_LOGGING_AND_PROFILING
  public:
   explicit VMState(StateTag state);
   ~VMState();
 
   StateTag state() { return state_; }
 
  private:
   StateTag state_;
   VMState* previous_;
@@ skipping 148 matching lines @@
   // of samples.
   static Profiler* profiler_;
 
   // mutex_ is a Mutex used for enforcing exclusive
   // access to the formatting buffer and the log file.
   static Mutex* mutex_;
 
   // A stack of VM states.
   static VMState* current_state_;
 
+  // Singleton bottom or default vm state.
+  static VMState bottom_state_;
+
   // SlidingStateWindow instance keeping a sliding window of the most
   // recent VM states.
   static SlidingStateWindow* sliding_state_window_;
 
   // Internal implementation classes with access to
   // private members.
   friend class LogMessageBuilder;
   friend class EventLog;
   friend class TimeLog;
   friend class Profiler;
@@ skipping 13 matching lines @@
   void Trace(TickSample* sample);
  private:
 
   unsigned int low_stack_bound_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_LOG_H_