Revert of Replace all remaining Oddball checks with new function

src/ic/handler-compiler.cc

 // Copyright 2014 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/ic/handler-compiler.h"
 
 #include "src/field-type.h"
 #include "src/ic/call-optimization.h"
 #include "src/ic/ic-inl.h"
 #include "src/ic/ic.h"
@@ skipping 10 matching lines @@
   Code::Flags flags = Code::ComputeHandlerFlags(kind, cache_holder);
   Code* code = stub_holder->LookupInCodeCache(*name, flags);
   if (code == nullptr) return Handle<Code>();
   return handle(code);
 }
 
 
 Handle<Code> NamedLoadHandlerCompiler::ComputeLoadNonexistent(
     Handle<Name> name, Handle<Map> receiver_map) {
   Isolate* isolate = name->GetIsolate();
-  if (receiver_map->prototype()->IsNull(isolate)) {
+  if (receiver_map->prototype()->IsNull()) {
     // TODO(jkummerow/verwaest): If there is no prototype and the property
     // is nonexistent, introduce a builtin to handle this (fast properties
     // -> return undefined, dictionary properties -> do negative lookup).
     return Handle<Code>();
   }
   CacheHolderFlag flag;
   Handle<Map> stub_holder_map =
       IC::GetHandlerCacheHolder(receiver_map, false, isolate, &flag);
 
   // If no dictionary mode objects are present in the prototype chain, the load
   // nonexistent IC stub can be shared for all names for a given map and we use
   // the empty string for the map cache in that case. If there are dictionary
   // mode objects involved, we need to do negative lookups in the stub and
   // therefore the stub will be specific to the name.
   Handle<Name> cache_name =
       receiver_map->is_dictionary_map()
           ? name
           : Handle<Name>::cast(isolate->factory()->nonexistent_symbol());
   Handle<Map> current_map = stub_holder_map;
   Handle<JSObject> last(JSObject::cast(receiver_map->prototype()));
   while (true) {
     if (current_map->is_dictionary_map()) cache_name = name;
-    if (current_map->prototype()->IsNull(isolate)) break;
+    if (current_map->prototype()->IsNull()) break;
     if (name->IsPrivate()) {
       // TODO(verwaest): Use nonexistent_private_symbol.
       cache_name = name;
       if (!current_map->has_hidden_prototype()) break;
     }
 
     last = handle(JSObject::cast(current_map->prototype()));
     current_map = handle(last->map());
   }
   // Compile the stub that is either shared for all names or
@@ skipping 541 matching lines @@
         LoadICState state = LoadICState(kNoExtraICState);
         cached_stub = LoadDictionaryElementStub(isolate(), state).GetCode();
       }
     }
 
     handlers->Add(cached_stub);
   }
 }
 }  // namespace internal
 }  // namespace v8