When running from within the chrome test harness, calls to CreateWindow*
in debug builds would return null when the title was an empty string.

Change-Id: I0d5dfb1eb824ff2a1470e7d66d850602e73988a0
Reviewed-on: https://chromium-review.googlesource.com/263430Reviewed-by: Geoff Lang <geofflang@chromium.org>
Tested-by: Geoff Lang <geofflang@chromium.org>