[proxies] allow duplicate keys for [[OwnPropertyKeys]] trap.

src/debug/debug-scopes.cc

 // 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.
 
 #include "src/debug/debug-scopes.h"
 
 #include "src/ast/scopes.h"
 #include "src/debug/debug.h"
 #include "src/frames-inl.h"
 #include "src/globals.h"
@@ skipping 458 matching lines @@
   // Third fill all context locals.
   Handle<Context> function_context(frame_context->closure_context());
   CopyContextLocalsToScopeObject(scope_info, function_context, local_scope);
 
   // Finally copy any properties from the function context extension.
   // These will be variables introduced by eval.
   if (function_context->closure() == *function &&
       function_context->has_extension() &&
       !function_context->IsNativeContext()) {
     bool success = CopyContextExtensionToScopeObject(
-        handle(function_context->extension_object(), isolate_),
-        local_scope, JSReceiver::INCLUDE_PROTOS);
+        handle(function_context->extension_object(), isolate_), local_scope,
+        INCLUDE_PROTOS);
     if (!success) return MaybeHandle<JSObject>();
   }
 
   return local_scope;
 }
 
 
 // Create a plain JSObject which materializes the closure content for the
 // context.
 Handle<JSObject> ScopeIterator::MaterializeClosure() {
   Handle<Context> context = CurrentContext();
   DCHECK(context->IsFunctionContext());
 
   Handle<SharedFunctionInfo> shared(context->closure()->shared());
   Handle<ScopeInfo> scope_info(shared->scope_info());
 
   // Allocate and initialize a JSObject with all the content of this function
   // closure.
   Handle<JSObject> closure_scope =
       isolate_->factory()->NewJSObject(isolate_->object_function());
 
   // Fill all context locals to the context extension.
   CopyContextLocalsToScopeObject(scope_info, context, closure_scope);
 
   // Finally copy any properties from the function context extension. This will
   // be variables introduced by eval.
   if (context->has_extension()) {
     bool success = CopyContextExtensionToScopeObject(
-        handle(context->extension_object(), isolate_), closure_scope,
-        JSReceiver::OWN_ONLY);
+        handle(context->extension_object(), isolate_), closure_scope, OWN_ONLY);
     DCHECK(success);
     USE(success);
   }
 
   return closure_scope;
 }
 
 
 // Create a plain JSObject which materializes the scope for the specified
 // catch context.
@@ skipping 27 matching lines @@
     context = CurrentContext();
   }
 
   if (!context.is_null()) {
     // Fill all context locals.
     CopyContextLocalsToScopeObject(handle(context->scope_info()),
                                    context, block_scope);
     // Fill all extension variables.
     if (context->extension_object() != nullptr) {
       bool success = CopyContextExtensionToScopeObject(
-          handle(context->extension_object()), block_scope,
-          JSReceiver::OWN_ONLY);
+          handle(context->extension_object()), block_scope, OWN_ONLY);
       DCHECK(success);
       USE(success);
     }
   }
   return block_scope;
 }
 
 
 // Create a plain JSObject which materializes the module scope for the specified
 // module context.
@@ skipping 217 matching lines @@
     if (value->IsTheHole()) continue;
     // This should always succeed.
     // TODO(verwaest): Use AddDataProperty instead.
     JSObject::SetOwnPropertyIgnoreAttributes(
         scope_object, handle(String::cast(scope_info->get(i + start))), value,
         NONE)
         .Check();
   }
 }
 
-
 bool ScopeIterator::CopyContextExtensionToScopeObject(
     Handle<JSObject> extension, Handle<JSObject> scope_object,
-    JSReceiver::KeyCollectionType type) {
+    KeyCollectionType type) {
   Handle<FixedArray> keys;
   ASSIGN_RETURN_ON_EXCEPTION_VALUE(
       isolate_, keys, JSReceiver::GetKeys(extension, type, ENUMERABLE_STRINGS),
       false);
 
   for (int i = 0; i < keys->length(); i++) {
     // Names of variables introduced by eval are strings.
     DCHECK(keys->get(i)->IsString());
     Handle<String> key(String::cast(keys->get(i)));
     Handle<Object> value;
     ASSIGN_RETURN_ON_EXCEPTION_VALUE(
         isolate_, value, Object::GetPropertyOrElement(extension, key), false);
     RETURN_ON_EXCEPTION_VALUE(
         isolate_, JSObject::SetOwnPropertyIgnoreAttributes(
             scope_object, key, value, NONE), false);
   }
   return true;
 }
 
 }  // namespace internal
 }  // namespace v8