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This reverts commit 339975cc.

Reason for revert: Search filter in Tab Search dialog not working as expected with this change. 

Original change's description:
> Tab Search: Infinite list - Efficient list DOM item updates
>
> Leverage the ListPropertyUpdateBehavior logic that uses Polymer's
> splices and calculateSplices functions to efficiently modify a single
> list item on tab updates, and avoid unnecessary scroll height
> calculations.
>
> Additionally, tab updates for not yet rendered items do not result in
> DOM updates.
>
> Proposal doc & benchmarks: https://docs.google.com/document/d/1FcuhM98moL-BYB1DJGXrpwf-JqMz1aI-RQV08giArBY/edit#heading=h.xzptrog8pyxf
>
> Most relevant pinpoint benchmarks:
> https://pinpoint-dot-chromeperf.appspot.com/job/15db6158d20000
> https://pinpoint-dot-chromeperf.appspot.com/job/107ab7f4d20000
> https://pinpoint-dot-chromeperf.appspot.com/job/16ccacccd20000
>
> Bug: 1149400
> Change-Id: I07fae967033b13830708da3035db3e8b2f0ff9d6
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2578119
> Commit-Queue: Roman Arora <romanarora@chromium.org>
> Reviewed-by: dpapad <dpapad@chromium.org>
> Reviewed-by: Esmael Elmoslimany <aee@chromium.org>
> Reviewed-by: Thomas Lukaszewicz <tluk@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#842182}

TBR=dpapad@chromium.org,aee@chromium.org,chromium-scoped@luci-project-accounts.iam.gserviceaccount.com,tluk@chromium.org,romanarora@chromium.org

Change-Id: Ic4e8289e6ade648a8a006dad3b5310443e4c8c4c
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 1149400
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2622721Reviewed-by: Roman Arora <romanarora@chromium.org>
Commit-Queue: Roman Arora <romanarora@chromium.org>
Cr-Commit-Position: refs/heads/master@{#842582}