IPC xpcshell tests hang the buildd's

bzr commit -m '* Fix LP: #898883 - IPC xpcshell tests hang the buildd's. Give all
  xpcshell tests an X display, as plugin-container won't work without one
  - update debian/build/testsuite.mk
* Turn on all IPC xpcshell tests again
  - update debian/build/testsute.mk' --fixes 'lp:898883'
Committing to: /home/chr1s/src/firefox/firefox-trunk/
modified debian/changelog
modified debian/build/testsuite.mk
Committed revision 1068.

This bug was fixed in the package firefox - 11.0~b1+build1-0ubuntu1

---------------
firefox (11.0~b1+build1-0ubuntu1) precise; urgency=low

  * New upstream release from the beta channel (FIREFOX_11_0b1_BUILD1)
    - Fix LP: #875266 - Firefox ignores GNOME3 proxy settings
    - Fix LP: #857153 - Needs to get accessibility settings from GSettings

  * Update globalmenu-extension to 2.0.3
  * Ensure that the crash reporter is disabled if rebuilt by Ubuntu
    derivatives, as there will be no crash symbols for those
    - update debian/rules
  * Only add "Ubuntu" to the UA string when being built for Ubuntu
    - update debian/rules
  * Drop obsolete Debian menu file
    - remove debian/firefox.menu.in
    - don't create a 32x32 xpm icon in debian/rules
    - drop the imagemagick build-depend in debian/control
  * Temporarily disable ipdl tests due to build failures. These aren't
    enabled upstream, anyway
    - update debian/config/mozconfig.in
  * Always set the update channel - not setting it at build-time on release
    builds breaks the extensions.checkCompatibility pref. The only things
    using it at runtime are nsBlocklistService, Test Pilot (beta + aurora)
    and the about dialog (where the channel is hidden anyway)
    - update debian/rules
    - update debian/firefox.install.in
  * Don't declare an extra DEB_ENABLE_THUMB2 variable, as it's only used
    for the mozconfig. Just do the "if DEB_HOST_ARCH == armel" check
    directly there instead
    - update debian/rules
    - update debian/config/mozconfig.in
  * Fix LP: #898883 - IPC xpcshell tests hang the buildd's. Give all
    xpcshell tests an X display, as plugin-container won't work without one
    - update debian/build/testsuite.mk
  * Turn on all IPC xpcshell tests again
    - update debian/build/testsute.mk
  * Drop the default-apps xml file from lucid and maverick - there is
    already one provided by gnome-control-center, which means that ours
    is only relevant for nightly builds. It's not worth the extra
    complexity for this
    - remove debian/firefox.xml.in
    - update debian/firefox-gnome-support.install.in
    - update debian/rules
  * Ship Test Pilot as a distribution addon, like upstream. This means
    that the addon manager can update it. It does also mean that it will
    remain installed in users profiles if they try the beta or aurora
    builds, but the Feedback button is disabled on release builds
    - update debian/firefox.install.in
    - fixes LP: #913357
  * Drop patches fixed upstream
    - remove debian/patches/fix-build-failure-without-yarr-jit.patch
    - remove debian/patches/fix-cursor-handling.patch
    - update debian/patches/series
  * Keep the firefox-kde-support suggest on releases older than precise
    for now
    - update debian/rules
  * Ensure that we suggest kmozillahelper on lucid
    - update debian/rules
  * Ensure that we replace kubuntu-firefox-installer on lucid
    - update debian/rules
  * Don't build with --disable-gconf on precise and newer. There won't be
    a hard runtime requirement on this from Firefox 12 anyway, and this
    keeps us closer to the upstream configuration
    - update debian/config/mozconfig.in
...