Add more descriptive error messages to TapToStopFling.html for better debugging.
Also changed file name to conform to convention.
Change-Id: Ib901161728143882f0f2abdc01e79c03bdec7f6d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6001495
Reviewed-by: Michal Mocny mmocny@chromium.org
Commit-Queue: Hao Liu haoliuk@chromium.org
Cr-Commit-Position: refs/heads/main@{#1379954}