Fetch AutoFill form data from server only when user data is present.
Fetch AutoFill form data from server only when user data is present.

Adds code to only query the AutoFill server if the user has AutoFill profile or credit card information set up in their preferences.

BUG=39923
TEST=NONE

Review URL: http://codereview.chromium.org/1517009

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@43271 0039d316-1c4b-4281-b951-d872f2087c98

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