Remove bottom-up CPU profile

src/profile-generator.h

 // Copyright 2011 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 204 matching lines @@
 
   // Add pc -> ... -> main() call path to the profile.
   void AddPath(const Vector<CodeEntry*>& path);
   void CalculateTotalTicks();
   void SetActualSamplingRate(double actual_sampling_rate);
   CpuProfile* FilteredClone(int security_token_id);
 
   INLINE(const char* title() const) { return title_; }
   INLINE(unsigned uid() const) { return uid_; }
   INLINE(const ProfileTree* top_down() const) { return &top_down_; }
-  INLINE(const ProfileTree* bottom_up() const) { return &bottom_up_; }
 
   void UpdateTicksScale();
 
   void ShortPrint();
   void Print();
 
  private:
   const char* title_;
   unsigned uid_;
   ProfileTree top_down_;
-  ProfileTree bottom_up_;
 
   DISALLOW_COPY_AND_ASSIGN(CpuProfile);
 };
 
 
 class CodeMap {
  public:
   CodeMap() : next_shared_id_(1) { }
   void AddCode(Address addr, CodeEntry* entry, unsigned size);
   void MoveCode(Address from, Address to);
@@ skipping 196 matching lines @@
   CodeEntry* gc_entry_;
   SampleRateCalculator sample_rate_calc_;
 
   DISALLOW_COPY_AND_ASSIGN(ProfileGenerator);
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_PROFILE_GENERATOR_H_