Fix the links in the media bubble pointing to the media UI.
This bug is a result of the fact that the media settings bubble still uses the deprecated MEDIASTREAM content setting. It will need refactoring. But as a quick remedy, we will make the bubble point to camera exceptions, microphone exceptions, or both; depending on whether the website accessed camera, microphone, or both.
BUG=515376,509962
Review URL: https://codereview.chromium.org/
1266583003
Cr-Commit-Position: refs/heads/master@{#341510}