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- Add a flag for the 'Use Camera' button in the 'Add Credit Card' view.
- The button directs the user to a credit card scanner that uses the camera to scan a credit card number.

Bug:989432

Change-Id: I431e8c915cdf3a745f470a2ab1ecc4552e761311
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1787550Reviewed-by: Eric Noyau <noyau@chromium.org>
Reviewed-by: Gauthier Ambard <gambard@chromium.org>
Commit-Queue: Tanisha Mandre <tanishamandre@google.com>
Cr-Commit-Position: refs/heads/master@{#693831}