Looks like it's usage had been removed with https://codereview.chromium.org/730573002, while the effort to open-source google-input-tools. I think we can remove ChromeKeyboardUI::SetUpdateInputType consequently.
The following revision refers to this bug: https://chromium.googlesource.com/chromium/src.git/+/d5ccccd11d40341dc3cda365d50b48fce0c58563 commit d5ccccd11d40341dc3cda365d50b48fce0c58563 Author: oka@chromium.org <oka@chromium.org> Date: Wed Jul 12 18:07:15 2017 Remove virtualKeyboardPrivate.OnTextInputTypeChanged. Bug: 739981 Change-Id: Idc363ceddee581c07317921f5f04c107ebeda427 Reviewed-on: https://chromium-review.googlesource.com/562946 Reviewed-by: James Cook <jamescook@chromium.org> Reviewed-by: Yuichiro Hanada <yhanada@chromium.org> Reviewed-by: Toni Barzic <tbarzic@chromium.org> Commit-Queue: Keigo Oka <oka@chromium.org> Cr-Commit-Position: refs/heads/master@{#486024} [modify] https://crrev.com/d5ccccd11d40341dc3cda365d50b48fce0c58563/ash/test/test_keyboard_ui.cc [modify] https://crrev.com/d5ccccd11d40341dc3cda365d50b48fce0c58563/ash/test/test_keyboard_ui.h [modify] https://crrev.com/d5ccccd11d40341dc3cda365d50b48fce0c58563/chrome/browser/ui/ash/chrome_keyboard_ui.cc [modify] https://crrev.com/d5ccccd11d40341dc3cda365d50b48fce0c58563/chrome/browser/ui/ash/chrome_keyboard_ui.h [modify] https://crrev.com/d5ccccd11d40341dc3cda365d50b48fce0c58563/extensions/common/api/virtual_keyboard_private.json [modify] https://crrev.com/d5ccccd11d40341dc3cda365d50b48fce0c58563/ui/keyboard/content/keyboard_ui_content_unittest.cc [modify] https://crrev.com/d5ccccd11d40341dc3cda365d50b48fce0c58563/ui/keyboard/keyboard_controller.cc [modify] https://crrev.com/d5ccccd11d40341dc3cda365d50b48fce0c58563/ui/keyboard/keyboard_controller_unittest.cc [modify] https://crrev.com/d5ccccd11d40341dc3cda365d50b48fce0c58563/ui/keyboard/keyboard_ui.h
Comment 1 by oka@chromium.org
, Jul 7 2017