Remove GC prologue and epilogue callbacks.

runtime/include/dart_api.h

 /*
  * Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
  * for details. All rights reserved. Use of this source code is governed by a
  * BSD-style license that can be found in the LICENSE file.
  */
 
 #ifndef RUNTIME_INCLUDE_DART_API_H_
 #define RUNTIME_INCLUDE_DART_API_H_
 
 /** \mainpage Dart Embedding API Reference
@@ skipping 500 matching lines @@
 Dart_NewWeakPersistentHandle(Dart_Handle object,
                              void* peer,
                              intptr_t external_allocation_size,
                              Dart_WeakPersistentHandleFinalizer callback);
 
 DART_EXPORT void Dart_DeleteWeakPersistentHandle(
     Dart_Isolate isolate,
     Dart_WeakPersistentHandle object);
 
 /*
- * ============================
- * Garbage Collection Callbacks
- * ============================
- */
-
-/**
- * Callbacks signal the beginning and end of a garbage collection.
- *
- * These signals are intended to be used by the embedder to manage the
- * lifetime of native objects with a managed object peer.
- */
-
-/**
- * A callback invoked at the beginning of a garbage collection.
- */
-typedef void (*Dart_GcPrologueCallback)();
-
-/**
- * A callback invoked at the end of a garbage collection.
- */
-typedef void (*Dart_GcEpilogueCallback)();
-
-/**
- * Adds garbage collection callbacks (prologue and epilogue).
- *
- * \param prologue_callback A function pointer to a prologue callback function.
- *   A prologue callback function should not be already set when this function
- *   is called. A NULL value removes the existing prologue callback function
- *   if any.
- *
- * \param epilogue_callback A function pointer to an epilogue callback function.
- *   An epilogue callback function should not be already set when this function
- *   is called. A NULL value removes the existing epilogue callback function
- *   if any.
- *
- * \return Success if the callbacks were added.  Otherwise, returns an
- *   error handle.
- */
-DART_EXPORT Dart_Handle
-Dart_SetGcCallbacks(Dart_GcPrologueCallback prologue_callback,
-                    Dart_GcEpilogueCallback epilogue_callback);
-
-/*
  * ==========================
  * Initialization and Globals
  * ==========================
  */
 
 /**
  * Gets the version string for the Dart VM.
  *
  * The version of the Dart VM can be accessed without initializing the VM.
  *
@@ skipping 2755 matching lines @@
  *  compiled with DART_PRECOMPILED_RUNTIME).
  */
 DART_EXPORT bool Dart_IsPrecompiledRuntime();
 
 /**
  *  Print a native stack trace. Used for crash handling.
  */
 DART_EXPORT void Dart_DumpNativeStackTrace(void* context);
 
 #endif /* INCLUDE_DART_API_H_ */ /* NOLINT */