add use counters for __defineGetter__ failing

src/builtins.cc

 // Copyright 2012 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/builtins.h"
 
 #include "src/api-arguments.h"
 #include "src/api-natives.h"
 #include "src/api.h"
 #include "src/base/ieee754.h"
@@ skipping 1690 matching lines @@
   desc.set_configurable(true);
   // 4. Let key be ? ToPropertyKey(P).
   ASSIGN_RETURN_FAILURE_ON_EXCEPTION(isolate, name,
                                      Object::ToPropertyKey(isolate, name));
   // 5. Perform ? DefinePropertyOrThrow(O, key, desc).
   // To preserve legacy behavior, we ignore errors silently rather than
   // throwing an exception.
   Maybe<bool> success = JSReceiver::DefineOwnProperty(
       isolate, receiver, name, &desc, Object::DONT_THROW);
   MAYBE_RETURN(success, isolate->heap()->exception());
+  if (!success.FromJust()) {
+    isolate->CountUsage(v8::Isolate::kDefineGetterOrSetterWouldThrow);
+  }
   // 6. Return undefined.
   return isolate->heap()->undefined_value();
 }
 
 Object* ObjectLookupAccessor(Isolate* isolate, Handle<Object> object,
                              Handle<Object> key, AccessorComponent component) {
   ASSIGN_RETURN_FAILURE_ON_EXCEPTION(isolate, object,
                                      Object::ConvertReceiver(isolate, object));
   ASSIGN_RETURN_FAILURE_ON_EXCEPTION(isolate, key,
                                      Object::ToPropertyKey(isolate, key));
@@ skipping 4344 matching lines @@
 BUILTIN_LIST_H(DEFINE_BUILTIN_ACCESSOR_H)
 BUILTIN_LIST_DEBUG_A(DEFINE_BUILTIN_ACCESSOR_A)
 #undef DEFINE_BUILTIN_ACCESSOR_C
 #undef DEFINE_BUILTIN_ACCESSOR_A
 #undef DEFINE_BUILTIN_ACCESSOR_T
 #undef DEFINE_BUILTIN_ACCESSOR_S
 #undef DEFINE_BUILTIN_ACCESSOR_H
 
 }  // namespace internal
 }  // namespace v8