Catch EXCEPTION_GUARD_PAGE in SafeGetImageInfo

SafeGetImageInfo shouldn't raise exceptions.

BUG=348693

Review URL: https://codereview.chromium.org/185533008

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@254870 0039d316-1c4b-4281-b951-d872f2087c98
Suppress memory error in MediaStreamAudioLevelCalulator

BUG=349152
TBR=xians@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/186623007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@254871 0039d316-1c4b-4281-b951-d872f2087c98
Delete the PNaCl translate thread before deleting object files on surfaway.

Can't currently use base's ScopedVector for obj_files
(instead of manual deletion), because base's [D]CHECK
macros conflict with the NaCl ones that currently
get pulled in.

BUG=348742
TEST= currently manual:
Put a sleep(n) at the right place in the translate
thread and surf away -- observe before and after the patch.

R=teravest@chromium.org

Review URL: https://codereview.chromium.org/185853008

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@254872 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 254871
SVN changes up to revision 254872