Revert "clang tot bots: Disable Wdangling-field"

This reverts commit c5f27d37931075ef2a3d23556a46c048c42cd7ae.

Reason for revert: Warning no longer fires after upstream r368501
fixed a false positive.

Original change's description:
> clang tot bots: Disable Wdangling-field
> 
> The warning got smarter on trunk, so turn it off while we fix.
> 
> We have to fix before we roll over this, else we lose a valuable existing
> warning -- the improvements to the warning aren't behind a new flag.
> 
> Instead of just disabling, make this one warning non-fatal so that we
> can use the tot bots to see how many things are left to fix.
> 
> Bug: 992640
> Change-Id: I157fec01af1a4df349abd500a6bf68e36987bc97
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1747194
> Commit-Queue: Nico Weber <thakis@chromium.org>
> Reviewed-by: Reid Kleckner <rnk@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#685801}

TBR=thakis@chromium.org,hans@chromium.org,rnk@chromium.org

Change-Id: I6e716c5a5f0042470a23720ffc138e1cfbcb930f
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 992640
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1745811
Reviewed-by: Nico Weber <thakis@chromium.org>
Commit-Queue: Nico Weber <thakis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#685875}
1 file changed