GitLab

In some instances, we receive a significant number of attribute changes within a short delay.

This change throws away attribute changes that generate the same output on the same target.

Test: manually on settings page. Verify that ChromeVox only announces the radio button once rather than > 30 times (and plays the radio button earcon 30 times).
Change-Id: I92127ad074b3a73ce269077cae6b69ba71f59c52
Reviewed-on: https://chromium-review.googlesource.com/1211972
Commit-Queue: David Tseng <dtseng@chromium.org>
Reviewed-by: Dominic Mazzoni <dmazzoni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#589700}