Introduce EmbedderHeapTracer

src/global-handles.cc

 // Copyright 2009 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/global-handles.h"
 
 #include "src/api.h"
 #include "src/v8.h"
 #include "src/vm-state-inl.h"
 
@@ skipping 626 matching lines @@
 
 bool GlobalHandles::IsNearDeath(Object** location) {
   return Node::FromLocation(location)->IsNearDeath();
 }
 
 
 bool GlobalHandles::IsWeak(Object** location) {
   return Node::FromLocation(location)->IsWeak();
 }
 
-
 void GlobalHandles::IterateWeakRoots(ObjectVisitor* v) {
   for (NodeIterator it(this); !it.done(); it.Advance()) {
     Node* node = it.node();
     if (node->IsWeakRetainer()) {
       // Pending weak phantom handles die immediately. Everything else survives.
       if (node->state() == Node::PENDING &&
           node->weakness_type() != NORMAL_WEAK) {
           node->CollectPhantomCallbackData(isolate(),
                                            &pending_phantom_callbacks_);
       } else {
@@ skipping 825 matching lines @@
   blocks_[block][offset] = object;
   if (isolate->heap()->InNewSpace(object)) {
     new_space_indices_.Add(size_);
   }
   *index = size_++;
 }
 
 
 }  // namespace internal
 }  // namespace v8