The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/e6ba074f2fd9f62d45282aaddfe6ba17ad04a34e

commit e6ba074f2fd9f62d45282aaddfe6ba17ad04a34e
Author: sebsg <sebsg@chromium.org>
Date: Sun Mar 13 21:26:03 2016

Adds the phone extension type for autocomplete attributes and server predictions.

BUG= 593031 
TEST=FormStructureBrowserTest

Review URL: https://codereview.chromium.org/1774153002

Cr-Commit-Position: refs/heads/master@{#380905}

[modify] https://crrev.com/e6ba074f2fd9f62d45282aaddfe6ba17ad04a34e/chrome/test/data/autofill/heuristics/output/013_autocomplete_attribute_basic.out
[modify] https://crrev.com/e6ba074f2fd9f62d45282aaddfe6ba17ad04a34e/chrome/test/data/autofill/heuristics/output/016_misc_phones.out
[modify] https://crrev.com/e6ba074f2fd9f62d45282aaddfe6ba17ad04a34e/chrome/test/data/autofill/heuristics/output/026_checkout_ikea.com.out
[modify] https://crrev.com/e6ba074f2fd9f62d45282aaddfe6ba17ad04a34e/chrome/test/data/autofill/heuristics/output/029_checkout_kohls.com.out
[modify] https://crrev.com/e6ba074f2fd9f62d45282aaddfe6ba17ad04a34e/chrome/test/data/autofill/heuristics/output/035_checkout_petco.com.out
[modify] https://crrev.com/e6ba074f2fd9f62d45282aaddfe6ba17ad04a34e/chrome/test/data/autofill/heuristics/output/037_checkout_qvc.com.out
[modify] https://crrev.com/e6ba074f2fd9f62d45282aaddfe6ba17ad04a34e/chrome/test/data/autofill/heuristics/output/038_checkout_sears.com.out
[modify] https://crrev.com/e6ba074f2fd9f62d45282aaddfe6ba17ad04a34e/chrome/test/data/autofill/heuristics/output/047_register_continental.com.out
[modify] https://crrev.com/e6ba074f2fd9f62d45282aaddfe6ba17ad04a34e/chrome/test/data/autofill/heuristics/output/049_register_ebay.com.out
[modify] https://crrev.com/e6ba074f2fd9f62d45282aaddfe6ba17ad04a34e/chrome/test/data/autofill/heuristics/output/062_register_newegg.com.out
[modify] https://crrev.com/e6ba074f2fd9f62d45282aaddfe6ba17ad04a34e/chrome/test/data/autofill/heuristics/output/063_register_officedepot.com.out
[modify] https://crrev.com/e6ba074f2fd9f62d45282aaddfe6ba17ad04a34e/chrome/test/data/autofill/heuristics/output/094_checkout_staples.com.out
[modify] https://crrev.com/e6ba074f2fd9f62d45282aaddfe6ba17ad04a34e/chrome/test/data/autofill/heuristics/output/097_register_alaskaair.com.out
[modify] https://crrev.com/e6ba074f2fd9f62d45282aaddfe6ba17ad04a34e/chrome/test/data/autofill/heuristics/output/110_checkout_harryanddavid.com.out
[modify] https://crrev.com/e6ba074f2fd9f62d45282aaddfe6ba17ad04a34e/chrome/test/data/autofill/heuristics/output/113_guest_checkout_peapod.com.out
[modify] https://crrev.com/e6ba074f2fd9f62d45282aaddfe6ba17ad04a34e/chrome/test/data/autofill/heuristics/output/138_cc_checkout_united.com.out
[modify] https://crrev.com/e6ba074f2fd9f62d45282aaddfe6ba17ad04a34e/components/autofill/core/browser/autofill_type.cc
[modify] https://crrev.com/e6ba074f2fd9f62d45282aaddfe6ba17ad04a34e/components/autofill/core/browser/field_types.h
[modify] https://crrev.com/e6ba074f2fd9f62d45282aaddfe6ba17ad04a34e/components/autofill/core/browser/form_structure.cc
[modify] https://crrev.com/e6ba074f2fd9f62d45282aaddfe6ba17ad04a34e/components/autofill/core/browser/form_structure_unittest.cc
[modify] https://crrev.com/e6ba074f2fd9f62d45282aaddfe6ba17ad04a34e/components/autofill/core/browser/phone_field.cc
[modify] https://crrev.com/e6ba074f2fd9f62d45282aaddfe6ba17ad04a34e/components/autofill/core/browser/phone_number.cc