Invalidate IPWL_FocusHandler and IPWL_Provider on destruction.

BUG=572871
R=tsepez@chromium.org

Review URL: https://codereview.chromium.org/1564773003 .

2 files changed, 209 insertions, 0 deletions

diff --git a/testing/resources/bug_572871.in b/testing/resources/bug_572871.in
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index 0000000000..20cb94394e
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+++ b/testing/resources/bug_572871.in
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diff --git a/testing/resources/bug_572871.pdf b/testing/resources/bug_572871.pdf
new file mode 100644
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