Reland: [Parse] ParseInfo owns the parsing Zone.

test/cctest/compiler/function-tester.cc

Index: test/cctest/compiler/function-tester.cc
diff --git a/test/cctest/compiler/function-tester.cc b/test/cctest/compiler/function-tester.cc
index c88713a6dcfc7ec5a36a4939949278262cb4efa4..0006db0d071cde00786daff7da9668264780b500 100644
--- a/test/cctest/compiler/function-tester.cc
+++ b/test/cctest/compiler/function-tester.cc
@@ -155,8 +155,7 @@ Handle<JSFunction> FunctionTester::ForMachineGraph(Graph* graph,
 }
 
 Handle<JSFunction> FunctionTester::Compile(Handle<JSFunction> function) {
-  Zone zone(function->GetIsolate()->allocator(), ZONE_NAME);
-  ParseInfo parse_info(&zone, handle(function->shared()));
+  ParseInfo parse_info(handle(function->shared()));
   CompilationInfo info(&parse_info, function);
 
   info.SetOptimizing();
@@ -185,8 +184,7 @@ Handle<JSFunction> FunctionTester::Compile(Handle<JSFunction> function) {
 // Compile the given machine graph instead of the source of the function
 // and replace the JSFunction's code with the result.
 Handle<JSFunction> FunctionTester::CompileGraph(Graph* graph) {
-  Zone zone(function->GetIsolate()->allocator(), ZONE_NAME);
-  ParseInfo parse_info(&zone, handle(function->shared()));
+  ParseInfo parse_info(handle(function->shared()));
   CompilationInfo info(&parse_info, function);
 
   CHECK(parsing::ParseFunction(info.parse_info()));