Revert "Re-enable the unified media pipeline for JellyBean"

This reverts commit 6e72427d55908dc1f44683bfe6c79847854abf40.

Re-disabling unified media pipeline due to crashes.

TBR=liberato
BUG=597467,612909

Review URL: https://codereview.chromium.org/2144733010 .

Cr-Commit-Position: refs/branch-heads/2743@{#632}
Cr-Branched-From: 2b3ae3b8090361f8af5a611712fc1a5ab2de53cb-refs/heads/master@{#394939}
1 file changed