Reimplement logging of API callbacks entry points in an easier way.

src/log.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 184 matching lines @@
                                      Object* name);
   static void ApiIndexedPropertyAccess(const char* tag,
                                        JSObject* holder,
                                        uint32_t index);
   static void ApiObjectAccess(const char* tag, JSObject* obj);
   static void ApiEntryCall(const char* name);
 
 
   // ==== Events logged by --log-code. ====
   // Emits a code event for a callback function.
-  static void CallbackEvent(const char* class_name, const char* method_name,
-                            Address entry_point);
+  static void CallbackEvent(String* name, Address entry_point);
   // Emits a code create event.
   static void CodeCreateEvent(LogEventsAndTags tag,
                               Code* code, const char* source);
   static void CodeCreateEvent(LogEventsAndTags tag, Code* code, String* name);
   static void CodeCreateEvent(LogEventsAndTags tag, Code* code, String* name,
                               String* source, int line);
   static void CodeCreateEvent(LogEventsAndTags tag, Code* code, int args_count);
   // Emits a code create event for a RegExp.
   static void RegExpCodeCreateEvent(Code* code, String* source);
   // Emits a code move event.
@@ skipping 47 matching lines @@
   static int GetActiveProfilerModules();
 
   // If logging is performed into a memory buffer, allows to
   // retrieve previously written messages. See v8.h.
   static int GetLogLines(int from_pos, char* dest_buf, int max_size);
 
   // Logs all compiled functions found in the heap.
   static void LogCompiledFunctions();
   // Used for logging stubs found in the snapshot.
   static void LogCodeObject(Object* code_object);
-  // Used for logging callback entry points to be able to reveal their
-  // names in call stacks when information about native code exports is
-  // inaccessible.
-  static void LogCallbacks();
 
  private:
 
   // Profiler's sampling interval (in milliseconds).
   static const int kSamplingIntervalMs = 1;
 
   // Size of window used for log records compression.
   static const int kCompressionWindowSize = 4;
 
   // Emits the profiler's first message.
@@ skipping 64 matching lines @@
 // Class that extracts stack trace, used for profiling.
 class StackTracer : public AllStatic {
  public:
   static void Trace(TickSample* sample);
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_LOG_H_