[destructuring] More tests for object literal pattern

src/parser.h

Index: src/parser.h
diff --git a/src/parser.h b/src/parser.h
index 4b4f12af292ea7e8f1161e4babfba9187d3e69ce..19ddb69f36fa4f1c8f2017e27854a48ca5994208 100644
--- a/src/parser.h
+++ b/src/parser.h
@@ -1013,6 +1013,9 @@ class Parser : public ParserBase<ParserTraits> {
     }
     bool inside_with() const { return descriptor_->parser->inside_with(); }
     Zone* zone() const { return descriptor_->parser->zone(); }
+    Scope* TemporaryDeclarationScope() const {
+      return descriptor_->parser->scope_->DeclarationScope();
+    }
 
     Expression* pattern_;
     int initializer_position_;
@@ -1101,6 +1104,7 @@ class Parser : public ParserBase<ParserTraits> {
   IterationStatement* LookupContinueTarget(const AstRawString* label, bool* ok);
 
   void AddAssertIsConstruct(ZoneList<Statement*>* body, int pos);
+  Statement* BuildAssertIsCoercible(Variable* var);
 
   // Factory methods.
   FunctionLiteral* DefaultConstructor(bool call_super, Scope* scope, int pos,