Valgrind: Update suppressions.
Valgrind: Update suppressions.

- Widen a sql suppression.
- Remove an old blink suppression.
- Add a new sync suppression.

BUG=67261,100982,603275
TBR=jyasskin@chromium.org

Review URL: https://codereview.chromium.org/1885033004

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#387113}

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