Introduce an OptimizingCompiler class, responsible for maintaining the state needed to run Cranksha…

src/hydrogen.h

Index: src/hydrogen.h
diff --git a/src/hydrogen.h b/src/hydrogen.h
index 60a4420024d3ad4019de686e7e880ecd2a6fd28e..9b1ad6f7ebfbf84b4a594e2987855868885573d4 100644
--- a/src/hydrogen.h
+++ b/src/hydrogen.h
@@ -871,6 +871,11 @@ class HGraphBuilder: public AstVisitor {
 
   void VisitDeclarations(ZoneList<Declaration*>* declarations);
 
+  void* operator new(size_t size, Zone* zone) {
+    return zone->New(size);
+  }
+  void operator delete(void* ptr) { }
+
  private:
   // Type of a member function that generates inline code for a native function.
   typedef void (HGraphBuilder::*InlineFunctionGenerator)(CallRuntime* call);