Delete several deprecated methods on v8::CpuProfiler

src/cpu-profiler.h

 // Copyright 2012 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 250 matching lines @@
  private:
   void StartProcessorIfNotStarted();
   void StopProcessorIfLastProfile(const char* title);
   void StopProcessor();
   void ResetProfiles();
   void LogBuiltins();
 
   Isolate* isolate_;
   TimeDelta sampling_interval_;
   CpuProfilesCollection* profiles_;
-  unsigned next_profile_uid_;
   ProfileGenerator* generator_;
   ProfilerEventsProcessor* processor_;
   bool saved_is_logging_;
   bool is_profiling_;
 
   DISALLOW_COPY_AND_ASSIGN(CpuProfiler);
 };
 
 } }  // namespace v8::internal
 
 
 #endif  // V8_CPU_PROFILER_H_