To M45: MSE: Provide link in media-internals to known bug 229412 until it is fixed

Until bug 229412 is fixed, this change at least provides a better
indication to developers when the bug is hit.

Review URL: https://codereview.chromium.org/1248453003

Cr-Commit-Position: refs/heads/master@{#339569}
(cherry picked from commit 7a7df715279034ae4e8ceffe9e1f74280212c031)

Since LogCB deprecation is not merged to M45, the cherry-pick conflicted
and is resolved to use the older log_cb_ mechanism instead of
media_log_.

BUG=229412
TBR=ddorwin@chromium.org

Review URL: https://codereview.chromium.org/1249773006 .

Cr-Commit-Position: refs/branch-heads/2454@{#98}
Cr-Branched-From: 12bfc3360892ec53cd00fc239a47e5298beb063b-refs/heads/master@{#338390}
1 file changed