Make array __proto__ manipulations not disturb the species protector

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index 45748500939bbd7ee82cdec3b3bb621dcd5c6303..d3a4be7e6183e962caf331ca4a2fa85878970288 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -10173,6 +10173,10 @@ class JSArray: public JSObject {
                                                     PropertyDescriptor* desc,
                                                     ShouldThrow should_throw);
 
+  // Checks whether the Array has the current realm's Array.prototype as its
+  // prototype.
+  MUST_USE_RESULT inline bool HasArrayPrototype(Isolate* isolate);

[adamk, 2016/05/03 00:45:31]

This doesn't need MUST_USE_RESULT (that's used to denote things that could
throw).

[Dan Ehrenberg, 2016/05/04 00:18:50]

Done

+
   DECLARE_CAST(JSArray)
 
   // Dispatched behavior.