Handlify Accessors::FunctionGetArguments method.

src/deoptimizer.cc

Index: src/deoptimizer.cc
diff --git a/src/deoptimizer.cc b/src/deoptimizer.cc
index 5f59fd9ab05584e96fec88e23ed8598ab5a0bc9b..9ed43382857a0fc7ce2e062a25a3b96f539d22ae 100644
--- a/src/deoptimizer.cc
+++ b/src/deoptimizer.cc
@@ -1618,11 +1618,9 @@ void Deoptimizer::MaterializeHeapObjects(JavaScriptFrameIterator* it) {
         if (arguments.is_null()) {
           if (frame->has_adapted_arguments()) {
             // Use the arguments adapter frame we just built to materialize the
-            // arguments object. FunctionGetArguments can't throw an exception,
-            // so cast away the doubt with an assert.
-            arguments = Handle<JSObject>(JSObject::cast(
-                Accessors::FunctionGetArguments(*function,
-                                                NULL)->ToObjectUnchecked()));
+            // arguments object. FunctionGetArguments can't throw an exception.
+            arguments = Handle<JSObject>::cast(
+                Accessors::FunctionGetArguments(function));
             values.RewindBy(length);
           } else {
             // Construct an arguments object and copy the parameters to a newly