Removing redundant stub for runtime native calls.

src/codegen.cc

Index: src/codegen.cc
===================================================================
--- src/codegen.cc	(revision 3744)
+++ src/codegen.cc	(working copy)
@@ -452,11 +452,6 @@
 }
 
 
-const char* RuntimeStub::GetName() {
-  return Runtime::FunctionForId(id_)->stub_name;
-}
-
-
 const char* GenericUnaryOpStub::GetName() {
   switch (op_) {
     case Token::SUB:
@@ -474,14 +469,6 @@
 }
 
 
-void RuntimeStub::Generate(MacroAssembler* masm) {
-  Runtime::Function* f = Runtime::FunctionForId(id_);
-  masm->TailCallRuntime(ExternalReference(f),
-                        num_arguments_,
-                        f->result_size);
-}
-
-
 void ArgumentsAccessStub::Generate(MacroAssembler* masm) {
   switch (type_) {
     case READ_LENGTH: GenerateReadLength(masm); break;
@@ -507,4 +494,10 @@
 }
 
 
+void DebugerStatementStub::Generate(MacroAssembler* masm) {
+  Runtime::Function* f = Runtime::FunctionForId(Runtime::kDebugBreak);
+  masm->TailCallRuntime(ExternalReference(f), 0, f->result_size);
+}
+
+
 } }  // namespace v8::internal