Adds C++ API for retrieving a stack trace without running JavaScript

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 91 matching lines @@
 
   /** Returns function entry UID. */
   unsigned GetCallUid() const;
 
   /** Returns child nodes count of the node. */
   int GetChildrenCount() const;
 
   /** Retrieves a child node by index. */
   const CpuProfileNode* GetChild(int index) const;
 
-  static const int kNoLineNumberInfo = 0;
+  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).
  */
 class V8EXPORT CpuProfile {
  public:
@@ skipping 44 matching lines @@
 };
 
 
 }  // namespace v8
 
 
 #undef V8EXPORT
 
 
 #endif  // V8_V8_PROFILER_H_