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 c47b7f2e9851723ccda2fb59eb9333bd2ed533f4..849dd50d85059a3805ccd87603f862ec9e48b75f 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);