Remove the weak list of views from array buffers

src/accessors.cc

Index: src/accessors.cc
diff --git a/src/accessors.cc b/src/accessors.cc
index 5ef8bf15f7e0d00e2724ed0d65748e19a9af2395..df981dc151a2362ed071f8be673efdf5d7189efb 100644
--- a/src/accessors.cc
+++ b/src/accessors.cc
@@ -78,32 +78,10 @@ bool Accessors::IsJSObjectFieldAccessor(Handle<Map> map, Handle<Name> name,
       return
         CheckForName(name, isolate->factory()->length_string(),
                      JSArray::kLengthOffset, object_offset);
-    case JS_TYPED_ARRAY_TYPE:
-      // %TypedArray%.prototype is non-configurable, and so are the following
-      // named properties on %TypedArray%.prototype, so we can directly inline
-      // the field-load for typed array maps that still use their
-      // %TypedArray%.prototype.
-      if (JSFunction::cast(map->GetConstructor())->prototype() !=
-          map->prototype()) {
-        return false;
-      }

[Toon Verwaest, 2015/04/17 13:25:55]

Just removing this without adding new support for loading the length from typed
arrays is going to tank gb performance by ~5%. I don't feel strongly about
implementing it in *this* CL, but we should repair the loss.

-      return
-        CheckForName(name, isolate->factory()->length_string(),
-                     JSTypedArray::kLengthOffset, object_offset) ||
-        CheckForName(name, isolate->factory()->byte_length_string(),
-                     JSTypedArray::kByteLengthOffset, object_offset) ||
-        CheckForName(name, isolate->factory()->byte_offset_string(),
-                     JSTypedArray::kByteOffsetOffset, object_offset);
     case JS_ARRAY_BUFFER_TYPE:
       return
         CheckForName(name, isolate->factory()->byte_length_string(),
                      JSArrayBuffer::kByteLengthOffset, object_offset);
-    case JS_DATA_VIEW_TYPE:
-      return
-        CheckForName(name, isolate->factory()->byte_length_string(),
-                     JSDataView::kByteLengthOffset, object_offset) ||
-        CheckForName(name, isolate->factory()->byte_offset_string(),
-                     JSDataView::kByteOffsetOffset, object_offset);
     default:
       if (map->instance_type() < FIRST_NONSTRING_TYPE) {
         return CheckForName(name, isolate->factory()->length_string(),