Implement "Autofill form data" import for Firefox

chrome/app/generated_resources.grd

Index: chrome/app/generated_resources.grd
diff --git a/chrome/app/generated_resources.grd b/chrome/app/generated_resources.grd
index bd3db4d48cffe853be498a50427c0adadfb280a2..5d705771741bfbb647f057c6657ab625b5f923a2 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -7409,6 +7409,9 @@ Keep your key file in a safe place. You will need it to create new versions of y
         <message name="IDS_IMPORT_SEARCH_ENGINES_CHKBOX" desc="Checkbox for importing search engines">
           Search engines
         </message>
+        <message name="IDS_IMPORT_AUTOFILL_FORM_DATA_CHKBOX" desc="Checkbox for importing form data for autofill">
+          Autofill form data

[Ilya Sherman, 2014/08/20 05:47:41]

nit: I think "Form data" or "Form data for Autofill" would be a slightly better
choice of string here.

[Nikhil, 2014/08/20 11:29:16]

Copying your comment from an earlier patch -
"nit: Per glen@, let's make this string "Autofill form data" to match the string
in the "Clear Browsing Data" UI."

Link -
https://chromiumcodereview.appspot.com/11305021/diff/12001/chrome/app/generat...

I think it's better to keep them consistent. Please let me know WDYT.

[Ilya Sherman, 2014/08/20 20:47:22]

Ah, thanks for reminding me.  I trust Glen's opinion on UI strings more than my
own, so SGTM :)

[Nikhil, 2014/08/21 07:35:36]

Acknowledged.

+        </message>
         <message name="IDS_IMPORT_LOADING_PROFILES" desc="Status text to notify the user that profiles are being loaded">
           Loading...
         </message>