Model exceptional edges from call nodes in TurboFan.

src/compiler/common-operator.h

Index: src/compiler/common-operator.h
diff --git a/src/compiler/common-operator.h b/src/compiler/common-operator.h
index 55b1c8e590c0e27cad221d94735c2d4c77cfcff2..f69399e58d744511218e15c617e0ac53ec5fccab 100644
--- a/src/compiler/common-operator.h
+++ b/src/compiler/common-operator.h
@@ -175,6 +175,8 @@ class CommonOperatorBuilder FINAL : public ZoneObject {
   const Operator* Branch(BranchHint = BranchHint::kNone);
   const Operator* IfTrue();
   const Operator* IfFalse();
+  const Operator* IfException();
+  const Operator* IfSuccess();
   const Operator* Switch(size_t control_output_count);
   const Operator* Case(size_t index);
   const Operator* Throw();