Various cleanups in check elimination.

src/arm/lithium-codegen-arm.cc

Index: src/arm/lithium-codegen-arm.cc
diff --git a/src/arm/lithium-codegen-arm.cc b/src/arm/lithium-codegen-arm.cc
index 606d4928edb13a57489feb836d4513471b4dbf4b..3eda96242f23f67f1d55e5dd9647593468489567 100644
--- a/src/arm/lithium-codegen-arm.cc
+++ b/src/arm/lithium-codegen-arm.cc
@@ -5155,15 +5155,15 @@ void LCodeGen::DoCheckMaps(LCheckMaps* instr) {
     __ bind(deferred->check_maps());
   }
 
-  const UniqueSet<Map>* map_set = instr->hydrogen()->map_set();
+  const UniqueSet<Map>* maps = instr->hydrogen()->maps();
   Label success;
-  for (int i = 0; i < map_set->size() - 1; i++) {
-    Handle<Map> map = map_set->at(i).handle();
+  for (int i = 0; i < maps->size() - 1; i++) {
+    Handle<Map> map = maps->at(i).handle();
     __ CompareMap(map_reg, map, &success);
     __ b(eq, &success);
   }
 
-  Handle<Map> map = map_set->at(map_set->size() - 1).handle();
+  Handle<Map> map = maps->at(maps->size() - 1).handle();
   __ CompareMap(map_reg, map, &success);
   if (instr->hydrogen()->has_migration_target()) {
     __ b(ne, deferred->entry());