Add autocompletion when hitting "End"
Add autocompletion when hitting "End"

R=1cf0af8245a3a17a632a2c73531392b0f9761c76@chromium.org

Bug: 1293807
Change-Id: I1685af32fdd73ddca99dfd3d598c0d028a319707
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/3439986
Auto-Submit: Tim Van der Lippe <dba8716ee7f8d16236046f74d2167cb94410f6ed@chromium.org>
Reviewed-by: Yang Guo <1cf0af8245a3a17a632a2c73531392b0f9761c76@chromium.org>
Commit-Queue: Yang Guo <1cf0af8245a3a17a632a2c73531392b0f9761c76@chromium.org>

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