[ignition] desugar GetIterator() via bytecode rather than via AST

src/parsing/pattern-rewriter.cc

Index: src/parsing/pattern-rewriter.cc
diff --git a/src/parsing/pattern-rewriter.cc b/src/parsing/pattern-rewriter.cc
index f3d9bb02a33bec518052372f713aec08ea3ef756..3a36fcb4491adc6fa96cd4718faff1ee1382e63f 100644
--- a/src/parsing/pattern-rewriter.cc
+++ b/src/parsing/pattern-rewriter.cc
@@ -359,7 +359,7 @@ void Parser::PatternRewriter::VisitArrayLiteral(ArrayLiteral* node,
   DCHECK(block_->ignore_completion_value());
 
   auto temp = *temp_var = CreateTempVar(current_value_);
-  auto iterator = CreateTempVar(parser_->GetIterator(
+  auto iterator = CreateTempVar(factory()->NewGetIterator(
       factory()->NewVariableProxy(temp), kNoSourcePosition));
   auto done =
       CreateTempVar(factory()->NewBooleanLiteral(false, kNoSourcePosition));
@@ -667,6 +667,7 @@ NOT_A_PATTERN(DoExpression)
 NOT_A_PATTERN(DoWhileStatement)
 NOT_A_PATTERN(EmptyStatement)
 NOT_A_PATTERN(EmptyParentheses)
+NOT_A_PATTERN(GetIterator)
 NOT_A_PATTERN(ExpressionStatement)
 NOT_A_PATTERN(ForInStatement)
 NOT_A_PATTERN(ForOfStatement)