Fix memory integration test.

TBR=tonyg@chromium.org,marja@chromium.org
BUG=307953

Review URL: https://codereview.chromium.org/34823003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@230414 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 230414