[debugger] simplify compile for debugging.

src/compiler.cc

Index: src/compiler.cc
diff --git a/src/compiler.cc b/src/compiler.cc
index 9fbf795e4923cc8858adced3f84acdb7d3620427..a8cf14c620079bdd7a202972aad68873a5d56311 100644
--- a/src/compiler.cc
+++ b/src/compiler.cc
@@ -1120,10 +1120,6 @@ bool Compiler::CompileOptimized(Handle<JSFunction> function,
   return true;
 }
 
-bool Compiler::CompileDebugCode(Handle<JSFunction> function) {
-  return CompileDebugCode(handle(function->shared()));
-}
-
 bool Compiler::CompileDebugCode(Handle<SharedFunctionInfo> shared) {
   Isolate* isolate = shared->GetIsolate();
   DCHECK(AllowCompilation::IsAllowed(isolate));