autofill: remove obsolete switch

BUG=315415

Review URL: https://codereview.chromium.org/73283003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@235589 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 235589
Force memcpy when reading a float, to avoid alignment issues

Despite our best efforts to align data when writing, when reading the data may
not be sufficiently aligned, causing some ARM platforms to SIGBUS when reading
floats. Force a memcpy instead to sidestep the issue.

BUG=315213

Review URL: https://codereview.chromium.org/73333002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@235590 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 235590