Remove CompilationInfoWithZone from public API.

src/compiler.h

Index: src/compiler.h
diff --git a/src/compiler.h b/src/compiler.h
index 37c1184004e8c4bb96423cd49f90c3cd88eacbef..18c1327c8eefd5f388a33983cb194f041fd62f93 100644
--- a/src/compiler.h
+++ b/src/compiler.h
@@ -488,22 +488,6 @@ class CompilationInfo {
 };
 
 
-// Exactly like a CompilationInfo, except also creates and enters a
-// Zone on construction and deallocates it on exit.
-class CompilationInfoWithZone: public CompilationInfo {
- public:
-  explicit CompilationInfoWithZone(Handle<Script> script);
-  explicit CompilationInfoWithZone(Handle<JSFunction> closure);
-
-  // Virtual destructor because a CompilationInfoWithZone has to exit the
-  // zone scope and get rid of dependent maps even when the destructor is
-  // called when cast as a CompilationInfo.
-  virtual ~CompilationInfoWithZone();
-
- private:
-  Zone zone_;
-};
-
 // A wrapper around a CompilationInfo that detaches the Handles from
 // the underlying DeferredHandleScope and stores them in info_ on
 // destruction.