Add libjingle_peerconnection_objc_test to buildbot_tests.py

To run this test, the executable in
libjingle_peerconnection_objc_test.app/Contents/MacOS/libjingle_peerconnection_objc_test
must be run. Running executables like this is not supported by
the buildbot scripts, which makes the paths to the stdio invalid.
Adding it to our command-line wrapping script and executing it as
'libjingle_peerconnection_objc_test' on the bots should work around
this limitation.

BUG=2120
TEST=locally building and executing the test on Mac using:
GYP_DEFINES="host_arch=x64 target_arch=x64" gclient runhooks
ninja -C out/Release
out/Release/buildbot_tests.py -t libjingle_peerconnection_objc_test

R=phoglund@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/2275007

git-svn-id: http://webrtc.googlecode.com/svn/trunk@4826 4adac7df-926f-26a2-2b94-8c16560cd09d

webrtc/test/buildbot_tests.py

@@ -38,6 +38,9 @@ _WIN_TESTS = {
                       '--automated'],
 }
 _MAC_TESTS = {
+    'libjingle_peerconnection_objc_test': [
+        ('libjingle_peerconnection_objc_test.app/Contents/MacOS/'
+         'libjingle_peerconnection_objc_test')],
     'vie_auto_test': _VIE_AUTO_TEST_CMD_LIST,
     'voe_auto_test': ['voe_auto_test',
                       '--automated',