Removed gpu crash and memory tests from content_browsertests.

They've been replaced by Telemetry variants on the bots.

BUG=310802,308675
R=kbr@chromium.org, piman@chromium.org

Review URL: https://codereview.chromium.org/39283003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@231114 0039d316-1c4b-4281-b951-d872f2087c98
Port AudioConverter benchmarks to media_perftests.

BUG=310837

Review URL: https://codereview.chromium.org/39263008

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@231115 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 231114
SVN changes up to revision 231115