Media Capabilities: add plumbing between Blink and media/blink/.

So much yummy plumbing! :)

Also fixing a typo in an IDL.

BUG=690380
R=chcunningham@chromium.org

Review-Url: https://codereview.chromium.org/2706313002
Cr-Commit-Position: refs/heads/master@{#456536}
18 files changed