Make all reload zone allocations use the same zone

runtime/vm/isolate.cc

Index: runtime/vm/isolate.cc
diff --git a/runtime/vm/isolate.cc b/runtime/vm/isolate.cc
index c743fae446206b5c287d138a331ff82cb42b8794..58a46ed48f0c425c99851102b8dde7d5d3efff76 100644
--- a/runtime/vm/isolate.cc
+++ b/runtime/vm/isolate.cc
@@ -1102,8 +1102,8 @@ bool Isolate::ReloadSources(JSONStream* js,
   ASSERT(!IsReloading());
   has_attempted_reload_ = true;
   reload_context_ = new IsolateReloadContext(this, js);
-  reload_context_->StartReload(force_reload);
-  bool success = !reload_context_->has_error();
+  reload_context_->Reload(force_reload);
+  bool success = !reload_context_->reload_aborted();
   // TODO(asiva): Add verification of canonical objects.
   if (dont_delete_reload_context) {
     // Unit tests use the reload context later. Caller is responsible
@@ -1125,7 +1125,7 @@ void Isolate::DeleteReloadContext() {
 void Isolate::DoneFinalizing() {
   NOT_IN_PRODUCT(
     if (IsReloading()) {
-      reload_context_->FinishReload();
+      reload_context_->FinalizeLoading();
     }
   )
 }