New heap profiler: include all heap objects and refs into snapshot.

src/api.cc

Index: src/api.cc
diff --git a/src/api.cc b/src/api.cc
index 5912449169889c18e3064ca21338949bfb1cb0cc..083859d3e985aa900da860120819cf4a015c6242 100644
--- a/src/api.cc
+++ b/src/api.cc
@@ -4669,9 +4669,11 @@ Handle<Value> HeapGraphEdge::GetName() const {
     case i::HeapGraphEdge::kContextVariable:
     case i::HeapGraphEdge::kInternal:
     case i::HeapGraphEdge::kProperty:
+    case i::HeapGraphEdge::kShortcut:
       return Handle<String>(ToApi<String>(i::Factory::LookupAsciiSymbol(
           edge->name())));
     case i::HeapGraphEdge::kElement:
+    case i::HeapGraphEdge::kHidden:
       return Handle<Number>(ToApi<Number>(i::Factory::NewNumberFromInt(
           edge->index())));
     default: UNREACHABLE();