Reland r11753: Fix try..finally.

src/assembler.h

Index: src/assembler.h
diff --git a/src/assembler.h b/src/assembler.h
index b9763e35ff230e91ee8a9aae410fd4aa4b0782da..c0fb14be720bf096990201e0908bf5ec0de4cdd1 100644
--- a/src/assembler.h
+++ b/src/assembler.h
@@ -643,6 +643,9 @@ class ExternalReference BASE_EMBEDDED {
   static ExternalReference handle_scope_level_address();
 
   static ExternalReference scheduled_exception_address(Isolate* isolate);
+  static ExternalReference address_of_pending_message_obj(Isolate* isolate);
+  static ExternalReference address_of_has_pending_message(Isolate* isolate);
+  static ExternalReference address_of_pending_message_script(Isolate* isolate);
 
   // Static variables containing common double constants.
   static ExternalReference address_of_min_int();