Reland: [Parse] ParseInfo owns the parsing Zone.

tools/parser-shell.cc

Index: tools/parser-shell.cc
diff --git a/tools/parser-shell.cc b/tools/parser-shell.cc
index 15458eb129b910ec78636264821e02952f66ff1a..29f52075cd04233440abb01eb0469901ff320959 100644
--- a/tools/parser-shell.cc
+++ b/tools/parser-shell.cc
@@ -94,8 +94,7 @@ std::pair<v8::base::TimeDelta, v8::base::TimeDelta> RunBaselineParser(
   i::ScriptData* cached_data_impl = NULL;
   // First round of parsing (produce data to cache).
   {
-    Zone zone(reinterpret_cast<i::Isolate*>(isolate)->allocator(), ZONE_NAME);
-    ParseInfo info(&zone, script);
+    ParseInfo info(script);
     info.set_cached_data(&cached_data_impl);
     info.set_compile_options(v8::ScriptCompiler::kProduceParserCache);
     v8::base::ElapsedTimer timer;
@@ -109,8 +108,7 @@ std::pair<v8::base::TimeDelta, v8::base::TimeDelta> RunBaselineParser(
   }
   // Second round of parsing (consume cached data).
   {
-    Zone zone(reinterpret_cast<i::Isolate*>(isolate)->allocator(), ZONE_NAME);
-    ParseInfo info(&zone, script);
+    ParseInfo info(script);
     info.set_cached_data(&cached_data_impl);
     info.set_compile_options(v8::ScriptCompiler::kConsumeParserCache);
     v8::base::ElapsedTimer timer;