linux: Update sizes expectations due to improvement from r255987.

Follow-up to https://codereview.chromium.org/189663018

BUG=350462
TBR=scherkus@chromium.org

Review URL: https://codereview.chromium.org/194083002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@256099 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 256099