Remove DCHECKs in TypedElementsAccessor

src/elements.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/elements.h"
 
 #include "src/arguments.h"
 #include "src/conversions.h"
 #include "src/factory.h"
 #include "src/isolate-inl.h"
@@ skipping 2801 matching lines @@
       }
     }
     *nof_items = count;
     return Just(true);
   }
 
   static Maybe<bool> IncludesValueImpl(Isolate* isolate,
                                        Handle<JSObject> receiver,
                                        Handle<Object> value,
                                        uint32_t start_from, uint32_t length) {
-    DCHECK(JSObject::PrototypeHasNoElements(isolate, *receiver));
     DisallowHeapAllocation no_gc;
 
     // TODO(caitp): return Just(false) here when implementing strict throwing on
     // neutered views.
     if (WasNeutered(*receiver)) {
       return Just(value->IsUndefined(isolate) && length > start_from);
     }
 
     BackingStore* elements = BackingStore::cast(receiver->elements());
     if (value->IsUndefined(isolate) &&
@@ skipping 34 matching lines @@
         if (std::isnan(element_k)) return Just(true);
       }
       return Just(false);
     }
   }
 
   static Maybe<int64_t> IndexOfValueImpl(Isolate* isolate,
                                          Handle<JSObject> receiver,
                                          Handle<Object> value,
                                          uint32_t start_from, uint32_t length) {
-    DCHECK(JSObject::PrototypeHasNoElements(isolate, *receiver));
     DisallowHeapAllocation no_gc;
 
     if (WasNeutered(*receiver)) return Just<int64_t>(-1);
 
     BackingStore* elements = BackingStore::cast(receiver->elements());
     if (!value->IsNumber()) return Just<int64_t>(-1);
 
     double search_value = value->Number();
 
     if (!std::isfinite(search_value)) {
@@ skipping 977 matching lines @@
     insertion_index += len;
   }
 
   DCHECK_EQ(insertion_index, result_len);
   return result_array;
 }
 
 ElementsAccessor** ElementsAccessor::elements_accessors_ = NULL;
 }  // namespace internal
 }  // namespace v8