[InputMethodNames] Update Japanese, K* and L* strings

Proposal: http://go/cros-input-methods-naming
Proposed names: http://go/cros-input-methods column C
Screenshot view: http://screen/7LsYDFYkkFrBUZ9

Bug: 889763
Change-Id: I918cae68beb3614f1c32374028320424897c597d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2517189


Commit-Queue: My Nguyen <myy@chromium.org>
Reviewed-by: Xiyuan Xia <xiyuan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#824758}