Pass FixedArrayBase in elements.cc.

This avoids casting problems in case of empty_fixed_array as
FixedDoubleArray with size 0. This avoids prematurely shortcutting in
case of 0 all over the place, which in turn leads to errors.

Review URL: https://chromiumcodereview.appspot.com/11299226

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13098 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/objects-inl.h

@@ -2342,13 +2342,6 @@ void SeededNumberDictionary::set_requires_slow_elements() {
 // Cast operations
 
 
-FixedDoubleArray* FixedDoubleArray::castOrEmptyFixedArray(Object* object) {
-  ASSERT(object == HeapObject::cast(object)->GetHeap()->empty_fixed_array() ||
-         object->IsFixedDoubleArray());
-  return reinterpret_cast<FixedDoubleArray*>(object);
-}
-
-
 CAST_ACCESSOR(FixedArray)
 CAST_ACCESSOR(FixedDoubleArray)
 CAST_ACCESSOR(DescriptorArray)

src/objects.h

@@ -2489,7 +2489,6 @@ class FixedDoubleArray: public FixedArrayBase {
 
   // Casting.
   static inline FixedDoubleArray* cast(Object* obj);
-  static inline FixedDoubleArray* castOrEmptyFixedArray(Object* obj);
 
   // Maximal allowed size, in bytes, of a single FixedDoubleArray.
   // Prevents overflowing size computations, as well as extreme memory