Allow self_size to be larger than 2GB in heap snapshots.

src/api.cc

Index: src/api.cc
diff --git a/src/api.cc b/src/api.cc
index dfde26565b1393bfa4de6f36b7844e3698c29586..fe822fa826c50d164a4dd862f91c2c6f0be18ef5 100644
--- a/src/api.cc
+++ b/src/api.cc
@@ -6971,7 +6971,9 @@ SnapshotObjectId HeapGraphNode::GetId() const {
 
 
 int HeapGraphNode::GetSelfSize() const {
-  return ToInternal(this)->self_size();
+  size_t size = ToInternal(this)->self_size();

[loislo, 2014/02/14 13:26:02]

please introduce GetShallowSize with size_t return value and deprecate this
method.

[alph, 2014/02/17 16:57:52]

Done.

+  CHECK(size <= static_cast<size_t>(internal::kMaxInt));
+  return static_cast<int>(size);
 }