[debugger] fix debug-evaluate wrt shadowed context var.

src/ast/scopeinfo.cc

 // Copyright 2011 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.
 
 #include "src/ast/scopeinfo.h"
 
 #include <stdlib.h>
 
 #include "src/ast/scopes.h"
 #include "src/bootstrapper.h"
@@ skipping 359 matching lines @@
 bool ScopeInfo::HasAllocatedReceiver() {
   if (length() > 0) {
     VariableAllocationInfo allocation = ReceiverVariableField::decode(Flags());
     return allocation == STACK || allocation == CONTEXT;
   } else {
     return false;
   }
 }
 
 
+bool ScopeInfo::HasContextAllocatedReceiver() {
+  if (length() > 0) {
+    VariableAllocationInfo allocation = ReceiverVariableField::decode(Flags());
+    return allocation == CONTEXT;
+  } else {
+    return false;
+  }
+}
+
+
 bool ScopeInfo::HasNewTarget() { return HasNewTargetField::decode(Flags()); }
 
 
 bool ScopeInfo::HasFunctionName() {
   if (length() > 0) {
     return NONE != FunctionVariableField::decode(Flags());
   } else {
     return false;
   }
 }
@@ skipping 459 matching lines @@
     info->set_mode(i, var->mode());
     DCHECK(var->index() >= 0);
     info->set_index(i, var->index());
   }
   DCHECK(i == info->length());
   return info;
 }
 
 }  // namespace internal
 }  // namespace v8