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

runtime/vm/stack_frame_test.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.
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "vm/class_finalizer.h"
 #include "vm/compiler.h"
 #include "vm/dart_api_impl.h"
 #include "vm/dart_entry.h"
@@ skipping 133 matching lines @@
 
 static Dart_NativeFunction native_lookup(Dart_Handle name,
                                          int argument_count) {
   const Object& obj = Object::Handle(Api::UnwrapHandle(name));
   ASSERT(obj.IsString());
   const char* function_name = obj.ToCString();
   ASSERT(function_name != NULL);
   int num_entries = sizeof(BuiltinEntries) / sizeof(struct NativeEntries);
   for (int i = 0; i < num_entries; i++) {
     struct NativeEntries* entry = &(BuiltinEntries[i]);
-    if (!strcmp(function_name, entry->name_)) {
-      if (entry->argument_count_ == argument_count) {
-        return reinterpret_cast<Dart_NativeFunction>(entry->function_);
-      } else {
-        // Wrong number of arguments.
-        // TODO(regis): Should we pass a buffer for error reporting?
-        return NULL;
-      }
+    if (!strcmp(function_name, entry->name_) &&
+        (entry->argument_count_ == argument_count)) {
+      return reinterpret_cast<Dart_NativeFunction>(entry->function_);
     }
   }
   return NULL;
 }
 
 
 // Unit test case to verify stack frame iteration.
 TEST_CASE(ValidateStackFrameIteration) {
   const char* kScriptChars =
       "class StackFrame {"
@@ skipping 118 matching lines @@
       "}";
   Dart_Handle lib = TestCase::LoadTestScript(
       kScriptChars,
       reinterpret_cast<Dart_NativeEntryResolver>(native_lookup));
   Dart_Handle cls = Dart_GetClass(lib, Dart_NewString("StackFrame2Test"));
   EXPECT_VALID(Dart_Invoke(cls, Dart_NewString("testMain"), 0, NULL));
 }
 #endif  // TARGET_ARCH_IA32 || TARGET_ARCH_X64.
 
 }  // namespace dart