Move LookupResult into crankshaft as that's now the only place where it's still used

src/objects.h

 // 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.
 
 #ifndef V8_OBJECTS_H_
 #define V8_OBJECTS_H_
 
 #include <iosfwd>
 
 #include "src/allocation.h"
@@ skipping 5977 matching lines @@
     return
         Smi::cast(cache->get(kProtoTransitionNumberOfEntriesOffset))->value();
   }
 
   inline void SetNumberOfProtoTransitions(int value) {
     FixedArray* cache = GetPrototypeTransitions();
     DCHECK(cache->length() != 0);
     cache->set(kProtoTransitionNumberOfEntriesOffset, Smi::FromInt(value));
   }
 
-  // Lookup in the map's instance descriptors and fill out the result if the
-  // name is found.
-  inline void LookupDescriptor(Name* name, LookupResult* result);
-
-  inline void LookupTransition(Name* name, PropertyAttributes attributes,
-                               LookupResult* result);
-
   inline PropertyDetails GetLastDescriptorDetails();
 
   // The size of transition arrays are limited so they do not end up in large
   // object space. Otherwise ClearNonLiveTransitions would leak memory while
   // applying in-place right trimming.
   inline bool CanHaveMoreTransitions();
 
   int LastAdded() {
     int number_of_own_descriptors = NumberOfOwnDescriptors();
     DCHECK(number_of_own_descriptors > 0);
@@ skipping 4289 matching lines @@
   inline void set_length(Smi* length);
 
   static void JSArrayUpdateLengthFromIndex(Handle<JSArray> array,
                                            uint32_t index,
                                            Handle<Object> value);
 
   static bool HasReadOnlyLength(Handle<JSArray> array);
   static bool WouldChangeReadOnlyLength(Handle<JSArray> array, uint32_t index);
   static MaybeHandle<Object> ReadOnlyLengthError(Handle<JSArray> array);
 
-  // TODO(adamk): Remove this method in favor of HasReadOnlyLength().
-  static bool IsReadOnlyLengthDescriptor(Handle<Map> jsarray_map);
-
   // Initialize the array with the given capacity. The function may
   // fail due to out-of-memory situations, but only if the requested
   // capacity is non-zero.
   static void Initialize(Handle<JSArray> array, int capacity, int length = 0);
 
   // Initializes the array to a certain length.
   inline bool AllowsSetElementsLength();
   // Can cause GC.
   MUST_USE_RESULT static MaybeHandle<Object> SetElementsLength(
       Handle<JSArray> array,
@@ skipping 654 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_