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This reverts commit a9531c4a.

Reason for revert:

Findit (https://goo.gl/kROfz5) identified CL at revision 606631 as the
culprit for failures in the build cycles as shown on:
https://findit-for-me.appspot.com/waterfall/culprit?key=ag9zfmZpbmRpdC1mb3ItbWVyRAsSDVdmU3VzcGVjdGVkQ0wiMWNocm9taXVtL2E5NTMxYzRhYWU1Y2FhY2RhN2MxNDg1OGRlMzg2MGVmYjQxMjI4YjQM

Sample Failed Build: https://ci.chromium.org/buildbot/chromium/android-rel/4213

Sample Failed Step: compile

Original change's description:
> Android: Roll android_tools and fix lint errors
> 
> Update lint to version 26.4.0-alpha03+.
> 
> This is the first lint update since 2017 September, thus a long list of
> TODOs is expected.
> 
> TBR for mechanical fixes to existing lint errors that are only exposed
> due to update.
> 
> TBR=mheikal@chromium.org
> 
> Bug: 900912
> Change-Id: I3335834ae308a3411ced51bb2c913b76a8f8d8c3
> Reviewed-on: https://chromium-review.googlesource.com/c/1327157
> Reviewed-by: Peter Wen <wnwen@chromium.org>
> Reviewed-by: Mohamed Heikal <mheikal@chromium.org>
> Commit-Queue: Peter Wen <wnwen@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#606631}

Change-Id: Ie3a61a6d093d8cd6426ddcd7bf833f98c9b4f78c
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 900912
Reviewed-on: https://chromium-review.googlesource.com/c/1327611
Cr-Commit-Position: refs/heads/master@{#606646}