Fix function premable for native entrypoints.

This change introduces nothing new. It only fixes the native entrypoints to use the right macros.

BUG=
R=asiva@google.com

Committed: https://code.google.com/p/dart/source/detail?r=25315

[rmacnak, 2013-07-22 20:30:41]

https://chromiumcodereview.appspot.com/19500016/diff/3/runtime/lib/mirrors.cc
File runtime/lib/mirrors.cc (right):

https://chromiumcodereview.appspot.com/19500016/diff/3/runtime/lib/mirrors.cc...
runtime/lib/mirrors.cc:1365: GET_NON_NULL_NATIVE_ARGUMENT(Instance, reflectee,
arguments->NativeArgAt(1));
This may be null.

https://chromiumcodereview.appspot.com/19500016/diff/3/runtime/lib/mirrors.cc...
runtime/lib/mirrors.cc:1401: GET_NON_NULL_NATIVE_ARGUMENT(Instance, reflectee,
arguments->NativeArgAt(1));
This may be null.

https://chromiumcodereview.appspot.com/19500016/diff/3/runtime/lib/mirrors.cc...
runtime/lib/mirrors.cc:1435: GET_NON_NULL_NATIVE_ARGUMENT(Instance, reflectee,
arguments->NativeArgAt(1));
This may be null.

[Michael Lippautz (Google), 2013-07-22 20:43:14]

https://chromiumcodereview.appspot.com/19500016/diff/3/runtime/lib/mirrors.cc
File runtime/lib/mirrors.cc (right):

https://chromiumcodereview.appspot.com/19500016/diff/3/runtime/lib/mirrors.cc...
runtime/lib/mirrors.cc:1365: GET_NON_NULL_NATIVE_ARGUMENT(Instance, reflectee,
arguments->NativeArgAt(1));
On 2013/07/22 20:30:41, Ryan Macnak wrote:
> This may be null.

Done.

https://chromiumcodereview.appspot.com/19500016/diff/3/runtime/lib/mirrors.cc...
runtime/lib/mirrors.cc:1401: GET_NON_NULL_NATIVE_ARGUMENT(Instance, reflectee,
arguments->NativeArgAt(1));
On 2013/07/22 20:30:41, Ryan Macnak wrote:
> This may be null.

Done.

https://chromiumcodereview.appspot.com/19500016/diff/3/runtime/lib/mirrors.cc...
runtime/lib/mirrors.cc:1435: GET_NON_NULL_NATIVE_ARGUMENT(Instance, reflectee,
arguments->NativeArgAt(1));
On 2013/07/22 20:30:41, Ryan Macnak wrote:
> This may be null.

Done.

[siva, 2013-07-22 22:40:53]

lgtm

[Michael Lippautz (Google), 2013-07-22 22:49:13]

Committed patchset #4 manually as r25315 (presubmit successful).