[NaCl SDK] Update build_sdk.py to display Cr-Commit-Position in README.

native_client_sdk/src/tools/tests/getos_test.py

Index: native_client_sdk/src/tools/tests/getos_test.py
diff --git a/native_client_sdk/src/tools/tests/getos_test.py b/native_client_sdk/src/tools/tests/getos_test.py
index 9004bd9e0f08210af2c2a793b27e01fc7b578497..c847fe12f76a2b0339be766daf58dcdff43389c4 100755
--- a/native_client_sdk/src/tools/tests/getos_test.py
+++ b/native_client_sdk/src/tools/tests/getos_test.py
@@ -117,10 +117,11 @@ class TestGetosWithTempdir(TestCaseExtended):
 
   def testGetSDKVersion(self):
     """correctly parses README to find SDK version."""
-    expected_version = (16, '196')
+    expected_version = (16, '196', 'f00baacabba6e-refs/heads/master@{#100}')
     with open(os.path.join(self.tempdir, 'README'), 'w') as out:
       out.write('Version: %s\n' % expected_version[0])
       out.write('Chrome Revision: %s\n' % expected_version[1])
+      out.write('Chrome Commit Position: %s\n' % expected_version[2])
 
     version = getos.GetSDKVersion()
     self.assertEqual(version, expected_version)