about:sync-internals: Use RequestStop(CLEAR_DATA) instead of KEEP_DATA

CLEAR_DATA is what's typically used in practice, and KEEP_DATA is a
weird concept anyway.

Bug: 860482
Change-Id: Ia3d15463a03f947db19d08ebfd035299ee566eaf
Reviewed-on: https://chromium-review.googlesource.com/1146572
Reviewed-by: Mohamed Amir Yosef <mamir@chromium.org>
Commit-Queue: Marc Treib <treib@chromium.org>
Cr-Commit-Position: refs/heads/master@{#577142}
1 file changed