Stop passing location argument to run time calls, since it is stored in the pc

runtime/vm/native_entry_test.cc

 // Copyright (c) 2011, 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.
 
 #include "vm/native_entry_test.h"
 
 #include "vm/assembler.h"
 #include "vm/code_patcher.h"
 #include "vm/native_entry.h"
 #include "vm/object.h"
@@ skipping 16 matching lines @@
 Dart_NativeFunction NativeTestEntry_Lookup(const String& name,
                                            int argument_count) {
   int num_entries = sizeof(TestEntries) / sizeof(struct NativeTestEntries);
   for (int i = 0; i < num_entries; i++) {
     struct NativeTestEntries* entry = &(TestEntries[i]);
     if (name.Equals(entry->name_)) {
       if (entry->argument_count_ == argument_count) {
         return entry->function_;
       } else {
         // Wrong number of arguments.
-        // TODO(regis): Should we pass a buffer for error reporting?
         return NULL;
       }
     }
   }
   return NULL;
 }
 
 
 // A native call for test purposes.
 // Arg0: a smi.
@@ skipping 33 matching lines @@
                                &target_function,
                                &target_address);
   EXPECT(String::Handle(target_function.name()).
       Equals(String::Handle(String::New("NativePatchStaticCall"))));
   const uword function_entry_address =
       Code::Handle(target_function.CurrentCode()).EntryPoint();
   EXPECT_EQ(function_entry_address, target_address);
 }
 
 }  // namespace dart