Zonify types in compiler frontend

src/codegen.cc

Index: src/codegen.cc
diff --git a/src/codegen.cc b/src/codegen.cc
index adb47b8fe46533deb2128d16c68ce1ca9f5c845a..13ce2218df41d972fda1c2b715fd3c8fcce9722f 100644
--- a/src/codegen.cc
+++ b/src/codegen.cc
@@ -89,12 +89,12 @@ void CodeGenerator::MakeCodePrologue(CompilationInfo* info, const char* kind) {
 #ifdef DEBUG
   if (!info->IsStub() && print_source) {
     PrintF("--- Source from AST ---\n%s\n",
-           PrettyPrinter(info->isolate()).PrintProgram(info->function()));
+           PrettyPrinter(info->zone()).PrintProgram(info->function()));
   }
 
   if (!info->IsStub() && print_ast) {
     PrintF("--- AST ---\n%s\n",
-           AstPrinter(info->isolate()).PrintProgram(info->function()));
+           AstPrinter(info->zone()).PrintProgram(info->function()));
   }
 #endif  // DEBUG
 }