Attempt to fix ash tests on Chrome OS valgrind

Revert "Valgrind: Address redness on the memory.fyi bots."

This reverts commit abc448256e3cdf70fa47cb921536d3e39d5055c0.

Fix for these tests is to reset the cursor state before each Ash test.

BUG=602487

Review URL: https://codereview.chromium.org/1885653003

Cr-Commit-Position: refs/heads/master@{#387108}
4 files changed