Move card unmask interfaces and controller into the autofill component.

These will be used in an upcoming CL implementing the iOS version of the card unmask prompt view.

BUG=484806

Review URL: https://codereview.chromium.org/1138653003

Cr-Original-Commit-Position: refs/heads/master@{#330537}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 982b06f6e72d19b019676c8f51c6a8f63e580c19

ios/grit_whitelist.txt

@@ -12,6 +12,8 @@ IDR_CRASHES_HTML
 IDR_CRASHES_JS
 IDR_CREDITS_HTML
 IDR_CREDITS_JS
+IDR_CREDIT_CARD_CVC_HINT
+IDR_CREDIT_CARD_CVC_HINT_AMEX
 IDR_DATA_REDUCTION_PROXY_INTERSTITIAL_HTML
 IDR_DEFAULT_FAVICON
 IDR_DEFAULT_FAVICON_32
@@ -134,6 +136,15 @@ IDS_APP_UNTITLED_SHORTCUT_FILE_NAME
 IDS_AUTOCOMPLETE_SEARCH_DESCRIPTION
 IDS_AUTOFILL_ADDRESS_LINE_SEPARATOR
 IDS_AUTOFILL_ADDRESS_SUMMARY_SEPARATOR
+IDS_AUTOFILL_CARD_UNMASK_PROMPT_ERROR_NETWORK
+IDS_AUTOFILL_CARD_UNMASK_PROMPT_ERROR_PERMANENT
+IDS_AUTOFILL_CARD_UNMASK_PROMPT_ERROR_TRY_AGAIN
+IDS_AUTOFILL_CARD_UNMASK_PROMPT_INSTRUCTIONS
+IDS_AUTOFILL_CARD_UNMASK_PROMPT_INSTRUCTIONS_AMEX
+IDS_AUTOFILL_CARD_UNMASK_PROMPT_INSTRUCTIONS_EXPIRED
+IDS_AUTOFILL_CARD_UNMASK_PROMPT_INSTRUCTIONS_EXPIRED_AMEX
+IDS_AUTOFILL_CARD_UNMASK_PROMPT_TITLE
+IDS_AUTOFILL_CARD_UNMASK_PROMPT_UPDATE_TITLE
 IDS_AUTOFILL_CC_AMEX
 IDS_AUTOFILL_CC_AMEX_SHORT
 IDS_AUTOFILL_CC_DINERS