vsync.cpp test is throwing error whe compiled

frameworks/native/services/surfaceflinger/tests/vsync/vsync.cpp:55:44: error: 'ALOOPER_EVENT_INPUT' was not declared in this scope
     loop->addFd(myDisplayEvent.getFd(), 0, ALOOPER_EVENT_INPUT, receiver,
                                            ^
frameworks/native/services/surfaceflinger/tests/vsync/vsync.cpp:64:18: error: 'ALOOPER_POLL_WAKE' was not declared in this scope
             case ALOOPER_POLL_WAKE:
                  ^
frameworks/native/services/surfaceflinger/tests/vsync/vsync.cpp:67:18: error: 'ALOOPER_POLL_CALLBACK' was not declared in this scope
             case ALOOPER_POLL_CALLBACK:
                  ^
frameworks/native/services/surfaceflinger/tests/vsync/vsync.cpp:70:18: error: 'ALOOPER_POLL_TIMEOUT' was not declared in this scope
             case ALOOPER_POLL_TIMEOUT:
                  ^
frameworks/native/services/surfaceflinger/tests/vsync/vsync.cpp:73:18: error: 'ALOOPER_POLL_ERROR' was not declared in this scope
             case ALOOPER_POLL_ERROR:
                  ^

it is missing one header file

Change-Id: Ie2fb02523a866b13a99edf837f072d101cacb466
Signed-off-by: Nanik Tolaram <nanikjava@gmail.com>