[debugger] ScopeIterator should unwrap debug-evaluate contexts.

src/debug/debug-scopes.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_SCOPES_H_
 #define V8_DEBUG_DEBUG_SCOPES_H_
 
 #include "src/debug/debug-frames.h"
 #include "src/frames.h"
 
@@ skipping 92 matching lines @@
   }
 
   inline Handle<JSFunction> GetFunction() {
     return Handle<JSFunction>::cast(frame_inspector_->GetFunction());
   }
 
   void RetrieveScopeChain(Scope* scope);
 
   void CollectNonLocals(Scope* scope);
 
+  void UnwrapEvaluationContext();
+
   MUST_USE_RESULT MaybeHandle<JSObject> MaterializeScriptScope();
   MUST_USE_RESULT MaybeHandle<JSObject> MaterializeLocalScope();
   MUST_USE_RESULT MaybeHandle<JSObject> MaterializeModuleScope();
   Handle<JSObject> MaterializeClosure();
   Handle<JSObject> MaterializeCatchScope();
   Handle<JSObject> MaterializeBlockScope();
+  Handle<JSObject> WithContextExtension();
 
   bool SetLocalVariableValue(Handle<String> variable_name,
                              Handle<Object> new_value);
   bool SetBlockVariableValue(Handle<String> variable_name,
                              Handle<Object> new_value);
   bool SetClosureVariableValue(Handle<String> variable_name,
                                Handle<Object> new_value);
   bool SetScriptVariableValue(Handle<String> variable_name,
                               Handle<Object> new_value);
   bool SetCatchVariableValue(Handle<String> variable_name,
@@ skipping 17 matching lines @@
   void GetNestedScopeChain(Isolate* isolate, Scope* scope,
                            int statement_position);
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(ScopeIterator);
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_DEBUG_DEBUG_SCOPES_H_