[debugger] ScopeIterator should unwrap debug-evaluate contexts.

src/debug/debug-evaluate.h

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_DEBUG_DEBUG_EVALUATE_H_
 #define V8_DEBUG_DEBUG_EVALUATE_H_
 
 #include "src/frames.h"
 #include "src/objects.h"
 
@@ skipping 46 matching lines @@
     Handle<SharedFunctionInfo> outer_info() const { return outer_info_; }
 
    private:
     struct ContextChainElement {
       Handle<ScopeInfo> scope_info;
       Handle<Context> wrapped_context;
       Handle<JSObject> materialized_object;
       Handle<StringSet> whitelist;
     };
 
-    Handle<JSObject> NewJSObjectWithNullProto();
-
     // Helper function to find or create the arguments object for
     // Runtime_DebugEvaluate.
     void MaterializeArgumentsObject(Handle<JSObject> target,
                                     Handle<JSFunction> function);
 
     void MaterializeReceiver(Handle<JSObject> target,
                              Handle<Context> local_context,
                              Handle<JSFunction> local_function,
                              Handle<StringSet> non_locals);
 
@@ skipping 11 matching lines @@
                                       Handle<HeapObject> context_extension,
                                       Handle<Object> receiver,
                                       Handle<String> source);
 };
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_DEBUG_DEBUG_EVALUATE_H_