[stubs] Unify (and optimize) implementation of ToObject.

src/compiler/js-intrinsic-lowering.cc

Index: src/compiler/js-intrinsic-lowering.cc
diff --git a/src/compiler/js-intrinsic-lowering.cc b/src/compiler/js-intrinsic-lowering.cc
index 06ade91dd40f7545da876ed952b445c30cce9d99..e82ac205ccf46d72b20022fd05f170db5445784c 100644
--- a/src/compiler/js-intrinsic-lowering.cc
+++ b/src/compiler/js-intrinsic-lowering.cc
@@ -94,6 +94,8 @@ Reduction JSIntrinsicLowering::Reduce(Node* node) {
       return ReduceGetTypeFeedbackVector(node);
     case Runtime::kInlineGetCallerJSFunction:
       return ReduceGetCallerJSFunction(node);
+    case Runtime::kInlineToObject:
+      return ReduceToObject(node);
     case Runtime::kInlineThrowNotDateError:
       return ReduceThrowNotDateError(node);
     case Runtime::kInlineCallFunction:
@@ -528,6 +530,12 @@ Reduction JSIntrinsicLowering::ReduceThrowNotDateError(Node* node) {
 }
 
 
+Reduction JSIntrinsicLowering::ReduceToObject(Node* node) {
+  node->set_op(javascript()->ToObject());
+  return Changed(node);
+}
+
+
 Reduction JSIntrinsicLowering::ReduceCallFunction(Node* node) {
   CallRuntimeParameters params = OpParameter<CallRuntimeParameters>(node->op());
   size_t arity = params.arity();