Reland of land: [Parse] ParseInfo owns the parsing Zone.

src/crankshaft/hydrogen.h

Index: src/crankshaft/hydrogen.h
diff --git a/src/crankshaft/hydrogen.h b/src/crankshaft/hydrogen.h
index 203c374d25dff78bf0672741ea92b2c991804831..09817400fceef55719067eb59d4d0c69116887a4 100644
--- a/src/crankshaft/hydrogen.h
+++ b/src/crankshaft/hydrogen.h
@@ -37,8 +37,7 @@
  public:
   explicit HCompilationJob(Handle<JSFunction> function)
       : CompilationJob(function->GetIsolate(), &info_, "Crankshaft"),
-        zone_(function->GetIsolate()->allocator(), ZONE_NAME),
-        parse_info_(&zone_, handle(function->shared())),
+        parse_info_(handle(function->shared())),
         info_(&parse_info_, function),
         graph_(nullptr),
         chunk_(nullptr) {}
@@ -49,7 +48,6 @@
   virtual Status FinalizeJobImpl();
 
  private:
-  Zone zone_;
   ParseInfo parse_info_;
   CompilationInfo info_;
   HGraph* graph_;