Revert revision 1949.

src/compiler.h

Index: src/compiler.h
===================================================================
--- src/compiler.h	(revision 1949)
+++ src/compiler.h	(working copy)
@@ -28,9 +28,7 @@
 #ifndef V8_COMPILER_H_
 #define V8_COMPILER_H_
 
-#include "frame-element.h"
 #include "parser.h"
-#include "zone.h"
 
 namespace v8 { namespace internal {
 
@@ -71,19 +69,6 @@
   static bool CompileLazy(Handle<SharedFunctionInfo> shared, int loop_nesting);
 };
 
-
-// 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() : ZoneScope(DELETE_ON_EXIT) { }
-  virtual ~CompilationZoneScope() {
-    if (ShouldDeleteOnExit()) FrameElement::ClearConstantList();
-  }
-};
-
-
 } }  // namespace v8::internal
 
 #endif  // V8_COMPILER_H_