Get rid of the unused native code StringAddStub.

src/code-stubs.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 251 matching lines @@
 // static
 void BinaryOpICWithAllocationSiteStub::GenerateAheadOfTime(
     Isolate* isolate, const BinaryOpIC::State& state) {
   if (state.CouldCreateAllocationMementos()) {
     BinaryOpICWithAllocationSiteStub stub(state);
     stub.GetCode(isolate);
   }
 }
 
 
-void NewStringAddStub::PrintBaseName(StringStream* stream) {
-  stream->Add("NewStringAddStub");
+void StringAddStub::PrintBaseName(StringStream* stream) {
+  stream->Add("StringAddStub");
   if ((flags() & STRING_ADD_CHECK_BOTH) == STRING_ADD_CHECK_BOTH) {
     stream->Add("_CheckBoth");
   } else if ((flags() & STRING_ADD_CHECK_LEFT) == STRING_ADD_CHECK_LEFT) {
     stream->Add("_CheckLeft");
   } else if ((flags() & STRING_ADD_CHECK_RIGHT) == STRING_ADD_CHECK_RIGHT) {
     stream->Add("_CheckRight");
   }
   if (pretenure_flag() == TENURED) {
     stream->Add("_Tenured");
   }
@@ skipping 490 matching lines @@
 
 
 // static
 void BinaryOpWithAllocationSiteStub::InstallDescriptors(Isolate* isolate) {
   BinaryOpWithAllocationSiteStub stub(Token::ADD, NO_OVERWRITE);
   InstallDescriptor(isolate, &stub);
 }
 
 
 // static
-void NewStringAddStub::InstallDescriptors(Isolate* isolate) {
-  NewStringAddStub stub(STRING_ADD_CHECK_NONE, NOT_TENURED);
+void StringAddStub::InstallDescriptors(Isolate* isolate) {
+  StringAddStub stub(STRING_ADD_CHECK_NONE, NOT_TENURED);
   InstallDescriptor(isolate, &stub);
 }
 
 
 ArrayConstructorStub::ArrayConstructorStub(Isolate* isolate)
     : argument_count_(ANY) {
   ArrayConstructorStubBase::GenerateStubsAheadOfTime(isolate);
 }
 
 
@@ skipping 21 matching lines @@
   InstallDescriptor(isolate, &stub3);
 }
 
 InternalArrayConstructorStub::InternalArrayConstructorStub(
     Isolate* isolate) {
   InternalArrayConstructorStubBase::GenerateStubsAheadOfTime(isolate);
 }
 
 
 } }  // namespace v8::internal