[turbofan] Preserve pending message while inside finally-block.

src/compiler/ast-graph-builder.h

Index: src/compiler/ast-graph-builder.h
diff --git a/src/compiler/ast-graph-builder.h b/src/compiler/ast-graph-builder.h
index 9ebefb5f83d40e1b9a6feeacf01cbc43e5d7a9d0..b26abbaee0f7a4dd4539f126f172fbbc85cb998a 100644
--- a/src/compiler/ast-graph-builder.h
+++ b/src/compiler/ast-graph-builder.h
@@ -231,6 +231,10 @@ class AstGraphBuilder : public AstVisitor {
   Node* BuildLoadClosure();
   Node* BuildLoadObjectField(Node* object, int offset);
 
+  // Builders for accessing external references.
+  Node* BuildLoadExternal(ExternalReference ref, MachineType type);
+  Node* BuildStoreExternal(ExternalReference ref, MachineType type, Node* val);
+
   // Builders for automatic type conversion.
   Node* BuildToBoolean(Node* value);
   Node* BuildToName(Node* value, BailoutId bailout_id);