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

src/top.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 247 matching lines @@
   static void MarkCompactPrologue(bool is_compacting);
   static void MarkCompactEpilogue(bool is_compacting);
   static void MarkCompactPrologue(bool is_compacting,
                                   char* archived_thread_data);
   static void MarkCompactEpilogue(bool is_compacting,
                                   char* archived_thread_data);
   static void PrintCurrentStackTrace(FILE* out);
   static void PrintStackTrace(FILE* out, char* thread_data);
   static void PrintStack(StringStream* accumulator);
   static void PrintStack();
-  static Handle<String> StackTrace();
+  static Handle<String> StackTraceString();
+  static Local<StackTrace> CaptureCurrentStackTrace(
+      int frame_limit,
+      StackTrace::StackTraceOptions options);
 
   // Returns if the top context may access the given global object. If
   // the result is false, the pending exception is guaranteed to be
   // set.
   static bool MayNamedAccess(JSObject* receiver,
                              Object* key,
                              v8::AccessType type);
   static bool MayIndexedAccess(JSObject* receiver,
                                uint32_t index,
                                v8::AccessType type);
@@ skipping 170 matching lines @@
 
 class ExecutionAccess BASE_EMBEDDED {
  public:
   ExecutionAccess();
   ~ExecutionAccess();
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_TOP_H_