- Remove Isolate::Flags structure and store flags directly in isolate.

runtime/vm/intermediate_language_arm64.cc

Index: runtime/vm/intermediate_language_arm64.cc
diff --git a/runtime/vm/intermediate_language_arm64.cc b/runtime/vm/intermediate_language_arm64.cc
index 84884ae471c9cc87a3feac3f4ea3eba8c9f5f7b0..3f6d6648ca76c3507ad1d1a6feb63d0f3c65d9c1 100644
--- a/runtime/vm/intermediate_language_arm64.cc
+++ b/runtime/vm/intermediate_language_arm64.cc
@@ -361,13 +361,13 @@ static void EmitAssertBoolean(Register reg,
   ASSERT(locs->always_calls());
   Label done;
 
-  if (Isolate::Current()->flags().type_checks()) {
+  if (Isolate::Current()->type_checks()) {
     __ CompareObject(reg, Bool::True());
     __ b(&done, EQ);
     __ CompareObject(reg, Bool::False());
     __ b(&done, EQ);
   } else {
-    ASSERT(Isolate::Current()->flags().asserts());
+    ASSERT(Isolate::Current()->asserts());
     __ CompareObject(reg, Object::null_instance());
     __ b(&done, NE);
   }