[heap] Do not invoke GC to make heap iterable.

src/api.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/api.h"
 
 #include <string.h>  // For memcpy, strlen.
 #ifdef V8_USE_ADDRESS_SANITIZER
 #include <sanitizer/asan_interface.h>
 #endif  // V8_USE_ADDRESS_SANITIZER
@@ skipping 379 matching lines @@
 
   i::Isolate* internal_isolate = reinterpret_cast<i::Isolate*>(isolate);
 
   // If we don't do this then we end up with a stray root pointing at the
   // context even after we have disposed of the context.
   internal_isolate->heap()->CollectAllAvailableGarbage("mksnapshot");
 
   // GC may have cleared weak cells, so compact any WeakFixedArrays
   // found on the heap.
   i::HeapIterator iterator(internal_isolate->heap(),
-                           i::HeapIterator::kFilterUnreachable);
+                           i::HeapObjectsFiltering::kFilterUnreachable);
   for (i::HeapObject* o = iterator.next(); o != NULL; o = iterator.next()) {
     if (o->IsPrototypeInfo()) {
       i::Object* prototype_users = i::PrototypeInfo::cast(o)->prototype_users();
       if (prototype_users->IsWeakFixedArray()) {
         i::WeakFixedArray* array = i::WeakFixedArray::cast(prototype_users);
         array->Compact<i::JSObject::PrototypeRegistryCompactionCallback>();
       }
     } else if (o->IsScript()) {
       i::Object* shared_list = i::Script::cast(o)->shared_function_infos();
       if (shared_list->IsWeakFixedArray()) {
@@ skipping 8387 matching lines @@
   Address callback_address =
       reinterpret_cast<Address>(reinterpret_cast<intptr_t>(callback));
   VMState<EXTERNAL> state(isolate);
   ExternalCallbackScope call_scope(isolate, callback_address);
   callback(info);
 }
 
 
 }  // namespace internal
 }  // namespace v8