Teach TurboFan to call C functions with result_size > 1.

src/compiler/js-graph.h

Index: src/compiler/js-graph.h
diff --git a/src/compiler/js-graph.h b/src/compiler/js-graph.h
index 83e103da6e63eb7fb37df6c7f4b2b87271f528df..2f990196d9214c164a941ea427c4c789c8210a07 100644
--- a/src/compiler/js-graph.h
+++ b/src/compiler/js-graph.h
@@ -32,7 +32,6 @@ class JSGraph : public ZoneObject {
         cache_(zone()) {}
 
   // Canonicalized global constants.
-  Node* CEntryStubConstant();
   Node* UndefinedConstant();
   Node* TheHoleConstant();
   Node* TrueConstant();
@@ -117,7 +116,6 @@ class JSGraph : public ZoneObject {
   MachineOperatorBuilder* machine_;
 
   // TODO(titzer): make this into a simple array.
-  SetOncePointer<Node> c_entry_stub_constant_;
   SetOncePointer<Node> undefined_constant_;
   SetOncePointer<Node> the_hole_constant_;
   SetOncePointer<Node> true_constant_;