Bug 1341238 - Add media.cubeb.backend to ContentPrefs. r=ehsan
This is necessary because `cubeb_init` is called _very_ early in the lifetime of a
content process, because it needs to be called before enabling seccomp.
MozReview-Commit-ID: KLXQiGDkQui
--- a/dom/ipc/ContentPrefs.cpp
+++ b/dom/ipc/ContentPrefs.cpp
@@ -148,16 +148,17 @@ const char* mozilla::dom::ContentPrefs::
"layout.css.variables.enabled",
"layout.css.visited_links_enabled",
"layout.idle_period.required_quiescent_frames",
"layout.idle_period.time_limit",
"layout.interruptible-reflow.enabled",
"mathml.disabled",
"media.apple.forcevda",
"media.clearkey.persistent-license.enabled",
+ "media.cubeb.backend",
"media.cubeb_latency_msg_frames",
"media.cubeb_latency_playback_ms",
"media.decoder-doctor.wmf-disabled-is-failure",
"media.decoder.fuzzing.dont-delay-inputexhausted",
"media.decoder.fuzzing.enabled",
"media.decoder.fuzzing.video-output-minimum-interval-ms",
"media.decoder.limit",
"media.decoder.recycle.enabled",
