[builtins] support exception handling in TFJ builtins

src/compiler/raw-machine-assembler.h

Index: src/compiler/raw-machine-assembler.h
diff --git a/src/compiler/raw-machine-assembler.h b/src/compiler/raw-machine-assembler.h
index f1bc3d789762eb3bd0338e4445c37310dbe5dc0b..c9009bf4325d3d634bc93f4fa138482f143eb6c0 100644
--- a/src/compiler/raw-machine-assembler.h
+++ b/src/compiler/raw-machine-assembler.h
@@ -759,6 +759,11 @@ class RawMachineAssembler {
   void DebugBreak();
   void Comment(const char* msg);
 
+  // Add success / exception successor blocks and ends the current block ending
+  // in a potentially throwing call node.
+  void Continuations(Node* call, RawMachineLabel* if_success,
+                     RawMachineLabel* if_exception);
+
   // Variables.
   Node* Phi(MachineRepresentation rep, Node* n1, Node* n2) {
     return AddNode(common()->Phi(rep, 2), n1, n2, graph()->start());