Recognize EMSGSIZE as non-fatal on OS X.

BUG=29225
TEST=PageCyclerTest.Intl2File test should succeed.

Review URL: http://codereview.chromium.org/460102

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@34056 0039d316-1c4b-4281-b951-d872f2087c98
2 files changed