Remove bottom-up CPU profile

include/v8-profiler.h

 // Copyright 2010 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 98 matching lines @@
   int GetChildrenCount() const;
 
   /** Retrieves a child node by index. */
   const CpuProfileNode* GetChild(int index) const;
 
   static const int kNoLineNumberInfo = Message::kNoLineNumberInfo;
 };
 
 
 /**
- * CpuProfile contains a CPU profile in a form of two call trees:
- *  - top-down (from main() down to functions that do all the work);
- *  - bottom-up call graph (in backward direction).
+ * CpuProfile contains a CPU profile in a form of top-down call tree
+ * (from main() down to functions that do all the work).
  */
 class V8EXPORT CpuProfile {
  public:
   /** Returns CPU profile UID (assigned by the profiler.) */
   unsigned GetUid() const;
 
   /** Returns CPU profile title. */
   Handle<String> GetTitle() const;
 
-  /** Returns the root node of the bottom up call tree. */
-  const CpuProfileNode* GetBottomUpRoot() const;
-
   /** Returns the root node of the top down call tree. */
   const CpuProfileNode* GetTopDownRoot() const;
 
   /**
    * Deletes the profile and removes it from CpuProfiler's list.
    * All pointers to nodes previously returned become invalid.
    * Profiles with the same uid but obtained using different
    * security token are not deleted, but become inaccessible
    * using FindProfile method. It is embedder's responsibility
    * to call Delete on these profiles.
@@ skipping 428 matching lines @@
 };
 
 
 }  // namespace v8
 
 
 #undef V8EXPORT
 
 
 #endif  // V8_V8_PROFILER_H_