Re-enable fast/js/reserved-words-as-property.html.

Error message migration is done and Blink has updated the expected result.

R=yangguo@chromium.org, ulan@chromium.org
BUG=v8:3126
LOG=N

Review URL: https://codereview.chromium.org/169353004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19493 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

tools/blink_tests/TestExpectations

@@ -26,5 +26,3 @@ crbug.com/178745 [ Win Debug ] plugins/open-and-close-window-with-plugin.html [
 crbug.com/249894 [ Linux Debug ] fast/js/regress/inline-arguments-access.html  [ Pass Failure Crash Slow ]
 [ Linux Debug ] fast/js/regress/inline-arguments-local-escape.html [ Slow ]
 
-# This test is temporarily disabled in Blink, too.
-crbug.com/340639 fast/js/reserved-words-as-property.html [ Pass Failure ]