Add titlecase entries for password bubbles.

Adresses adding title casing to all password bubbles except the sign-in
promo which is being handled in a separate CL. String content is not
updated except for title casing them according to AP style and removing
trailing colon characters. IDS_ entries are kept the same to keep the
change easier.

Bug: chromium:654115
Change-Id: I0022f5d9e5e54c2cac3def66ee75901baa30013a
Reviewed-on: https://chromium-review.googlesource.com/890039
Commit-Queue: Peter Boström <pbos@chromium.org>
Reviewed-by: Vasilii Sukhanov <vasilii@chromium.org>
Reviewed-by: Bret Sepulveda <bsep@chromium.org>
Cr-Commit-Position: refs/heads/master@{#533422}
2 files changed