Reland "[strong] Object literals create strong objects"

src/hydrogen.cc

 // Copyright 2013 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/hydrogen.h"
 
 #include <sstream>
 
 #include "src/v8.h"
 
@@ skipping 5772 matching lines @@
   bool uninitialized = false;
   Handle<Object> literals_cell(literals->get(expr->literal_index()),
                                isolate());
   Handle<JSObject> boilerplate_object;
   if (literals_cell->IsUndefined()) {
     uninitialized = true;
     Handle<Object> raw_boilerplate;
     ASSIGN_RETURN_ON_EXCEPTION_VALUE(
         isolate(), raw_boilerplate,
         Runtime::CreateArrayLiteralBoilerplate(
-            isolate(), literals, expr->constant_elements()),
+            isolate(), literals, expr->constant_elements(),
+            is_strong(function_language_mode())),
         Bailout(kArrayBoilerplateCreationFailed));
 
     boilerplate_object = Handle<JSObject>::cast(raw_boilerplate);
     AllocationSiteCreationContext creation_context(isolate());
     site = creation_context.EnterNewScope();
     if (JSObject::DeepWalk(boilerplate_object, &creation_context).is_null()) {
       return Bailout(kArrayBoilerplateCreationFailed);
     }
     creation_context.ExitScope(site, boilerplate_object);
     literals->set(expr->literal_index(), *site);
@@ skipping 7322 matching lines @@
   if (ShouldProduceTraceOutput()) {
     isolate()->GetHTracer()->TraceHydrogen(name(), graph_);
   }
 
 #ifdef DEBUG
   graph_->Verify(false);  // No full verify.
 #endif
 }
 
 } }  // namespace v8::internal