Autofill OSX: Add RetriableErrorMessage text label.
Add error message text label between CVC input row and Verify/Cancel
buttons. Error messages passed to
CardUnmaskPromptViewBridge::GotVerificationResult() are displayed.
Dialog will re-layout to fit entire message if a multiline message is
set. Previous to this CL the layout was done exactly once per dialog,
upon dialog creation. This CL refactors the layout code out into
-performLayout and calls it whenever the error message text changes.
Screenshot attached to bug: https://code.google.com/p/chromium/issues/detail?id=448572#c14
BUG=448572
Review URL: https://codereview.chromium.org/
1024553004
Cr-Commit-Position: refs/heads/master@{#322262}