Fix for NeedsManualRebaseline lines in TestExpectations

This patch provides the fix for NeedsManualRebaseline lines
in TestExpectations added in following revision
https://src.chromium.org/viewvc/blink?revision=174761&view=revision

Review URL: https://codereview.chromium.org/306473008

git-svn-id: svn://svn.chromium.org/blink/trunk@175270 bbb929c8-8fbe-4397-9dbb-9b2b20218538