Save the native name on the function instead of finding it in the token stream for lazily-linked na…

runtime/vm/native_entry.cc

Index: runtime/vm/native_entry.cc
diff --git a/runtime/vm/native_entry.cc b/runtime/vm/native_entry.cc
index 63c9a61a185036241fb5689ec9cf3bfcc2f6b938..adedfb78914f4555036492b085899939b56926ab 100644
--- a/runtime/vm/native_entry.cc
+++ b/runtime/vm/native_entry.cc
@@ -129,33 +129,17 @@ void NativeEntry::NativeCallWrapper(Dart_NativeArguments args,
 }
 
 
-static bool IsNativeKeyword(const TokenStream::Iterator& it) {
-  return Token::IsIdentifier(it.CurrentTokenKind()) &&
-      (it.CurrentLiteral() == Symbols::Native().raw());
-}
-
-
 static NativeFunction ResolveNativeFunction(Zone* zone,
                                             const Function& func,
                                             bool* is_bootstrap_native) {
-  const Script& script = Script::Handle(zone, func.script());
   const Class& cls = Class::Handle(zone, func.Owner());
   const Library& library = Library::Handle(zone, cls.library());
 
   *is_bootstrap_native =
       Bootstrap::IsBootstapResolver(library.native_entry_resolver());
 
-  TokenStream::Iterator it(TokenStream::Handle(zone, script.tokens()),
-                           func.token_pos());
-
-  const intptr_t end_pos = func.end_token_pos();
-  while (!IsNativeKeyword(it) && it.CurrentPosition() <= end_pos) {
-    it.Advance();
-  }
-  ASSERT(IsNativeKeyword(it));
-  it.Advance();
-  ASSERT(it.CurrentTokenKind() == Token::kSTRING);
-  const String& native_name = String::Handle(it.CurrentLiteral());
+  const String& native_name = String::Handle(zone, func.native_name());
+  ASSERT(!native_name.IsNull());
 
   const int num_params = NativeArguments::ParameterCountForResolution(func);
   bool auto_setup_scope = true;