AutoFill: Copy FormManager::LabelForElement and the corresponding FormManager::InferLabelForElement to form_field.cc until the FormData/FormFieldValues consolidation is finished.
AutoFill: Copy FormManager::LabelForElement and the corresponding
FormManager::InferLabelForElement to form_field.cc until the
FormData/FormFieldValues consolidation is finished.

BUG=33031
TEST=none

Review URL: http://codereview.chromium.org/1394003

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@42730 0039d316-1c4b-4281-b951-d872f2087c98

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