Changed statement ZoneList to a ZoneChunkList

src/crankshaft/hydrogen.cc

Index: src/crankshaft/hydrogen.cc
diff --git a/src/crankshaft/hydrogen.cc b/src/crankshaft/hydrogen.cc
index 79e78a53f5b32c2dce5ad4f9b95b4858e7d88100..6d33f8c2b544768cda273c05f6ed7b775a361982 100644
--- a/src/crankshaft/hydrogen.cc
+++ b/src/crankshaft/hydrogen.cc
@@ -4281,12 +4281,11 @@ void HOptimizedGraphBuilder::SetUpScope(DeclarationScope* scope) {
   }
 }
 
-
-void HOptimizedGraphBuilder::VisitStatements(ZoneList<Statement*>* statements) {
-  for (int i = 0; i < statements->length(); i++) {
-    Statement* stmt = statements->at(i);
-    CHECK_ALIVE(Visit(stmt));
-    if (stmt->IsJump()) break;
+void HOptimizedGraphBuilder::VisitStatements(
+    ZoneChunkList<Statement*>* statements) {
+  for (Statement* statement : *statements) {
+    CHECK_ALIVE(Visit(statement));
+    if (statement->IsJump()) break;
   }
 }