Kill some dead code: classic frame element and const lists.

src/compiler.h

Index: src/compiler.h
diff --git a/src/compiler.h b/src/compiler.h
index 4fc9ffe97260338f67fb1c7dbb6a8b3bc38b9d6f..a77fc8ea4ab41b1e34c7bacf884dc6e46f8536ac 100644
--- a/src/compiler.h
+++ b/src/compiler.h
@@ -299,24 +299,6 @@ class Compiler : public AllStatic {
 };
 
 
-// During compilation we need a global list of handles to constants
-// for frame elements.  When the zone gets deleted, we make sure to
-// clear this list of handles as well.
-class CompilationZoneScope : public ZoneScope {
- public:
-  CompilationZoneScope(Isolate* isolate, ZoneScopeMode mode)
-      : ZoneScope(isolate, mode) {}
-
-  virtual ~CompilationZoneScope() {
-    if (ShouldDeleteOnExit()) {
-      Isolate* isolate = Isolate::Current();
-      isolate->frame_element_constant_list()->Clear();
-      isolate->result_constant_list()->Clear();
-    }
-  }
-};
-
-
 } }  // namespace v8::internal
 
 #endif  // V8_COMPILER_H_