Update handling of ambiguous name references

runtime/vm/intrinsifier.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 // Class for intrinsifying functions.
 
 #include "vm/intrinsifier.h"
 #include "vm/flags.h"
 #include "vm/object.h"
 #include "vm/symbols.h"
 
@@ skipping 84 matching lines @@
   Isolate* isolate = Isolate::Current();
   Library& lib = Library::Handle(isolate);
   Class& cls = Class::Handle(isolate);
   Function& func = Function::Handle(isolate);
   String& str = String::Handle(isolate);
   Error& error = Error::Handle(isolate);
 
 #define SETUP_FUNCTION(class_name, function_name, destination, fp)             \
   if (strcmp(#class_name, "::") == 0) {                                        \
     str = String::New(#function_name);                                         \
-    func = lib.LookupFunctionAllowPrivate(str, NULL);                          \
+    func = lib.LookupFunctionAllowPrivate(str);                                \
   } else {                                                                     \
     str = String::New(#class_name);                                            \
-    cls = lib.LookupClassAllowPrivate(str, NULL);                              \
+    cls = lib.LookupClassAllowPrivate(str);                                    \
     ASSERT(!cls.IsNull());                                                     \
     error = cls.EnsureIsFinalized(isolate);                                    \
     ASSERT(error.IsNull());                                                    \
     if (#function_name[0] == '.') {                                            \
       str = String::New(#class_name#function_name);                            \
     } else {                                                                   \
       str = String::New(#function_name);                                       \
     }                                                                          \
     func = cls.LookupFunctionAllowPrivate(str);                                \
   }                                                                            \
@@ skipping 45 matching lines @@
     }
   } else if (lib.raw() == Library::TypedDataLibrary()) {
     TYPED_DATA_LIB_INTRINSIC_LIST(FIND_INTRINSICS);
   } else if (lib.raw() == Library::MathLibrary()) {
     MATH_LIB_INTRINSIC_LIST(FIND_INTRINSICS);
   }
 #undef FIND_INTRINSICS
 }
 
 }  // namespace dart