[stubs] Port KeyedLoadSloppyArgumentsStub and KeyedStoreSloppyArgumentsStub to TurboFan.

src/full-codegen/full-codegen.cc

Index: src/full-codegen/full-codegen.cc
diff --git a/src/full-codegen/full-codegen.cc b/src/full-codegen/full-codegen.cc
index 6182094e821933230802568745df22e03b9b5872..163fd9bd7e8fe7f1dbd450720630f0fc7e89f215 100644
--- a/src/full-codegen/full-codegen.cc
+++ b/src/full-codegen/full-codegen.cc
@@ -244,6 +244,7 @@ void FullCodeGenerator::CallKeyedStoreIC() {
   Handle<Code> ic =
       CodeFactory::KeyedStoreIC(isolate(), language_mode()).code();
   CallIC(ic);
+  RestoreContext();
 }
 
 void FullCodeGenerator::RecordJSReturnSite(Call* call) {
@@ -1093,7 +1094,7 @@ void FullCodeGenerator::EmitKeyedPropertyLoad(Property* prop) {
   __ Move(LoadDescriptor::SlotRegister(),
           SmiFromSlot(prop->PropertyFeedbackSlot()));
   CallIC(ic);
-  if (FLAG_tf_load_ic_stub) RestoreContext();
+  RestoreContext();
 }
 
 void FullCodeGenerator::EmitKeyedSuperPropertyLoad(Property* prop) {