Introduce LiteralsArray to hide it's implementation.

src/runtime/runtime-function.cc

 // Copyright 2014 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/runtime/runtime-utils.h"
 
 #include "src/accessors.h"
 #include "src/arguments.h"
 #include "src/compiler.h"
 #include "src/deoptimizer.h"
@@ skipping 218 matching lines @@
   SharedFunctionInfo::SetScript(
       target_shared, Handle<Object>(source_shared->script(), isolate));
 
   // Set the code of the target function.
   target->ReplaceCode(source_shared->code());
   DCHECK(target->next_function_link()->IsUndefined());
 
   // Make sure we get a fresh copy of the literal vector to avoid cross
   // context contamination.
   Handle<Context> context(source->context());
+  target->set_context(*context);
+
   int number_of_literals = source->NumberOfLiterals();
-  Handle<FixedArray> literals =
-      isolate->factory()->NewFixedArray(number_of_literals, TENURED);
-  target->set_context(*context);
+  Handle<LiteralsArray> literals =
+      LiteralsArray::New(isolate, handle(target_shared->feedback_vector()),
+                         number_of_literals, TENURED);
   target->set_literals(*literals);
 
   if (isolate->logger()->is_logging_code_events() ||
       isolate->cpu_profiler()->is_profiling()) {
     isolate->logger()->LogExistingFunction(source_shared,
                                            Handle<Code>(source_shared->code()));
   }
 
   return *target;
 }
@@ skipping 349 matching lines @@
 
 
 RUNTIME_FUNCTION(Runtime_ThrowStrongModeTooFewArguments) {
   HandleScope scope(isolate);
   DCHECK(args.length() == 0);
   THROW_NEW_ERROR_RETURN_FAILURE(isolate,
                                  NewTypeError(MessageTemplate::kStrongArity));
 }
 }  // namespace internal
 }  // namespace v8