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Also added rich UI element for KpEntityResultParser.

Bug: b/150783279
Test: unit tests
Change-Id: Ia40b848f9e9caf8b246627d415b4b41fe188b28b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2088212Reviewed-by: Xiyuan Xia <xiyuan@chromium.org>
Commit-Queue: Li Lin <llin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#747433}