Proxies: Fix receiver for setters inherited from proxies.

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index e9dfe6ca55b94b8a923137b3cdfbcd47355ae79e..e2d718534e79e34f35164f2a3e5f60aeeb541029 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -7708,11 +7708,13 @@ class JSProxy: public JSReceiver {
       uint32_t index);
 
   MUST_USE_RESULT MaybeObject* SetPropertyWithHandler(
+      JSReceiver* receiver,
       String* name,
       Object* value,
       PropertyAttributes attributes,
       StrictModeFlag strict_mode);
   MUST_USE_RESULT MaybeObject* SetElementWithHandler(
+      JSReceiver* receiver,
       uint32_t index,
       Object* value,
       StrictModeFlag strict_mode);
@@ -7720,6 +7722,7 @@ class JSProxy: public JSReceiver {
   // If the handler defines an accessor property, invoke its setter
   // (or throw if only a getter exists) and set *found to true. Otherwise false.
   MUST_USE_RESULT MaybeObject* SetPropertyWithHandlerIfDefiningSetter(
+      JSReceiver* receiver,
       String* name,
       Object* value,
       PropertyAttributes attributes,