Remove the dependency of Zone on Isolate

src/runtime/runtime-internal.cc

Index: src/runtime/runtime-internal.cc
diff --git a/src/runtime/runtime-internal.cc b/src/runtime/runtime-internal.cc
index 38f238b1cdd76e7fc90f21b7689c33b7201ac268..370b190107fa6be6e99a8635e88d15b331d88a1b 100644
--- a/src/runtime/runtime-internal.cc
+++ b/src/runtime/runtime-internal.cc
@@ -163,18 +163,18 @@ RUNTIME_FUNCTION(Runtime_RenderCallSite) {
   isolate->ComputeLocation(&location);
   if (location.start_pos() == -1) return isolate->heap()->empty_string();
 
-  Zone zone(isolate);
+  Zone zone;
   if (location.function()->shared()->is_function()) {
     CompilationInfo info(location.function(), &zone);
     if (!Parser::Parse(&info)) return isolate->heap()->empty_string();
-    CallPrinter printer(&zone);
+    CallPrinter printer(isolate, &zone);
     const char* string = printer.Print(info.function(), location.start_pos());
     return *isolate->factory()->NewStringFromAsciiChecked(string);
   }
 
   CompilationInfo info(location.script(), &zone);
   if (!Parser::Parse(&info)) return isolate->heap()->empty_string();
-  CallPrinter printer(&zone);
+  CallPrinter printer(isolate, &zone);
   const char* string = printer.Print(info.function(), location.start_pos());
   return *isolate->factory()->NewStringFromAsciiChecked(string);
 }