Call PpapiDecryptor::CalcelDecrypt() on the right thread.

TBR=scherkus@chromium.org
BUG=321835
TEST=none

Review URL: https://codereview.chromium.org/78003005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@236610 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 236610
ozone: Fix pipe creation in release builds

Side effects in DCHECK don't happen in release builds.

Review URL: https://codereview.chromium.org/80583004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@236611 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 236611